Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf419049a5601c6a…

MALICIOUS

PDF

89.5 KB Created: 2021-06-10 01:37:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: a6ec1c9f415780e29dd41f3e59000417 SHA-1: 831490d2035742b2861ba936ea8bc5da70d66d0a SHA-256: bf419049a5601c6ae7a1c31db43417f1b190405ee3c7de1b20a01ef1be50e4ce
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is classified as malicious by ML models and ClamAV, and contains numerous links to potentially compromised websites. The document body, though heavily obfuscated, suggests a lure related to 'pirate books free', indicating a phishing or malware distribution attempt. The presence of multiple external URIs and link farms points towards an effort to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://infrive.ru/uplcv?utm_term=pirate+books+free PDF link annotation
    • http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2991d70b11---gojigol.pdfIn PDF document text
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/3c21212272a1dc3dc725b09c82b83500/74330826891.pdfIn PDF document text
    • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/1ef330f5606a781efa343cd130ec3639/xeforade.pdfIn PDF document text
    • https://jxloanchien.com/style/postimage/file/45138115736.pdfIn PDF document text
    • https://irantruck.ir/data/file/49907710089.pdfIn PDF document text
    • http://alexhoffordphotography.com/temp/files/file/dubozusofudidasago.pdfIn PDF document text
    • http://mini-garden.ru/userfiles/file/wozogupitekoguvufapegi.pdfIn PDF document text
    • http://yossy.biz/userfiles/file/19137569355.pdfIn PDF document text
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/16075257e9ceea---73295713390.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdb1b015b4c---64231310666.pdfIn PDF document text
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/d7664662f5e965fb29b48fca22ad3751/panopukenedododoperilu.pdfIn PDF document text
    • http://innotec-industrie.be/userfiles/file/81163276503.pdfIn PDF document text
    • https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5279cadf67---pozudadarubamuzofezidez.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/66f0840eca39a48454adb28b924e6aa4/bopotomumenurukugi.pdfIn PDF document text
    • http://nuraski.pl/wsg/userfiles/bovavexusabonasofotutix.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088c1e84f303---26497606850.pdfIn PDF document text
    • https://pet-fashion.ro/mm/file/50093342829.pdfIn PDF document text
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160722f3a881ce---zosodunazesodumixejamen.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba54959683d---5975248087.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f15d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15D 6440 bytes
SHA-256: 705377623a4c4344e02470fedf876d1ed6f0c7c0eac322cafb15afc9430d14bf
font_01_sfnt_off00010151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10151 4616 bytes
SHA-256: 8f89fd1687edd249f1bef0d82cd9960b205b2d6bedef4d6ebc0ed74842a8ccbc
font_02_sfnt_off0001110f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1110F 10980 bytes
SHA-256: 071281d7a151b8935b1306582d6c7dc94023c02cfd89351b36c7b8002efa051e
font_03_sfnt_off00013638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13638 16036 bytes
SHA-256: bc1c1644e30597ae0beaac312b9749a82b64e26c109397326cdc67fdbaf2fe17
font_04_sfnt_off00014a9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A9F 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

Open this report in the interactive analyzer, or submit your own file for analysis.