Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff2dfc12d0c3572b…

MALICIOUS

PDF

77.0 KB Created: 2021-09-01 16:16:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 9ff7407fdd610c6fa72b8018e067ecb4 SHA-1: 23f7b80e7709cbcfa677170c2a74d942c75d57fa SHA-256: ff2dfc12d0c3572bd5bc8d3c4a8b1c78fccc4e70a70d62cf6344cd08428edd61
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF was identified as malicious by ML classifiers and ClamAV, detecting it as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to external sites, some of which are hosted on compromised WordPress installations or disposable domains. The presence of these links suggests an intent to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://cissud.it/uploads/ck_editor/files/44047886657.pdf In PDF document text
    • https://bosgo.mn/uploads/files/86322350409.pdfIn PDF document text
    • http://alexandraharris.com/clients/36054/File/10229387579.pdfIn PDF document text
    • https://aashianarealty.com/file/36438661552.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbfaf0f075---53585759942.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/16077f0ebecc80---18480087693.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/16125d3074f3f1---sumopolevuvob.pdfIn PDF document text
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3e5e069082---96582478413.pdfIn PDF document text
    • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad9849995f9---35886666212.pdfIn PDF document text
    • https://baoholaodong24.com/userfiles/file/44114415198.pdfIn PDF document text
    • http://allasclub.com/campannas/file/27610620777.pdfIn PDF document text
    • http://akinmedical.com/uploads/file/ropifalejevunugabifemizu.pdfIn PDF document text
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079677f9b477---joxonuxururejeg.pdfIn PDF document text
    • https://shatalarab-llc.net/userfiles/files/koxitoralidinotepuju.pdfIn PDF document text
    • http://lirealestatelitigator.com/wp-content/plugins/super-forms/uploads/php/files/4b7d8097757d4f1f736b0e7bb5bf8f4f/26571000684.pdfIn PDF document text
    • http://tortsurprise.ru/upload/redactor/files/xuxivizemidoleru.pdfIn PDF document text
    • http://marcobernini.it/userfiles/files/38579097800.pdfIn PDF document text
    • http://usefchina.com/uploadfile/file///2021072211545661.pdfIn PDF document text
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/1884a51a2c550c567fecc23fd19658d7/jitodasopa.pdfIn PDF document text
    • https://bawwabatrizq.com/userfiles/file/63421682013.pdfIn PDF document text
    • https://suma.ca/upload/editor/file/sajunupenexeris.pdfIn PDF document text
    • http://syuncyoku.jp/upload/file/6575219466.pdfIn PDF document text
    • https://www.kalirich.com/wp-content/plugins/super-forms/uploads/php/files/h0tieueogjq3l18gfeg1jrg2e2/liwoza.pdfIn PDF document text
    • https://libyamonitor.com/sites/all/libraries/ckfinder/userfiles/files/17635436737.pdfIn PDF document text
    • https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/o6j9l8pt0j00i4rm2j2h0n0rp4/67301307029.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=nuclear+physics+lectures+pdfPDF link annotation
    • 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC927 10684 bytes
SHA-256: 54123e9c250be37825e4f57f28661db1df070db84fc00e8331922e572c5582c3
font_01_sfnt_off0000e1c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C9 16644 bytes
SHA-256: 96f929c2a369a9fcb11a62f001c06ba1597564926dc5cc866ad00cb9f75addf3
font_02_sfnt_off00010c76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C76 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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