Malicious PDF — malware analysis report

Static analysis result for SHA-256 e224337f3f3e586b…

MALICIOUS

PDF

92.7 KB Created: 2021-09-05 23:03:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 1ceb0e82a42709b0458806d18f62acd6 SHA-1: 46b8b238c5cf18109749cbe408518fe67c751477 SHA-256: e224337f3f3e586b6b2cfaf96e03e172d78e742451e66338c958a29fa7e77f39
164 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and disposable hosting domains. The presence of 'utm_term' parameters suggests an attempt to track user clicks, common in phishing campaigns. No scripts were extracted, but the primary attack vector appears to be directing users to external malicious content via embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

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://garglob.ru/uplcv?utm_term=rrb+ajmer+syllabus+2019+pdf PDF link annotation
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/0f92g0hrr4bb02u231tcnmg7lt/74020459865.pdfIn PDF document text
    • http://studiobaldizzone.com/userfiles/files/15601960507.pdfIn PDF document text
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160767f32b495f---lipitufigavewi.pdfIn PDF document text
    • https://butchercurnow.com/img/shop//contents/11315496723.pdfIn PDF document text
    • http://sb-78.ru/files/file/rozerawekuladuzapupewa.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be94fa651c0---19320874668.pdfIn PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba7a73a6bf---47112025821.pdfIn PDF document text
    • https://rivieresoceanie.com/ckfinder/userfiles/files/poribibetivonuwafiraw.pdfIn PDF document text
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/67c9249d96c3d473dc4ab275b95aa2f9/ramexo.pdfIn PDF document text
    • http://ciaooo.ru/uploades/userfiles/file/85854939886.pdfIn PDF document text
    • http://santeh.md/img/files/4731394440.pdfIn PDF document text
    • http://www.mediagrand.hu//data/editorfile/99331095992.pdfIn PDF document text
    • http://seibyou-koujien.com/files/files/92421892080.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af5a221e88f---rosatowonitad.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1608c2287b63ac---pefiruvojejefi.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/410daf24de934571d25bb14beea165b0/xakonake.pdfIn PDF document text
    • https://creativitagh.com/pevron/www/img/file/deduwirutanubanuxonat.pdfIn PDF document text
    • http://boldogelet.hu/media/lopukumijekur.pdfIn PDF document text
    • https://bluetact.com/locktactyuma/userfiles/file/bekonebigazodudagoxazugub.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adefb757586---47879555847.pdfIn PDF document text
    • http://waukeganeast1980.com/clients/877304/File/57158688833.pdfIn PDF document text
    • http://ahxxzx.com/userfiles/202105/file/3196559894.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160acd6502a269---binipoze.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/2184f6c345d1cbab22ad175410e4a2bf/terolagosozed.pdfIn PDF document text
    • https://farmacieitaliane.com/documenti/file/57228869619.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afe4837fbcd---dafabobowuvivagitoturi.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
    • 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_off0001028d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1028D 11236 bytes
SHA-256: 4c27db52603d454e59ff79ee0308459760558c67f88a39ea07dc0fde76c9cfd9
font_01_sfnt_off00011cdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CDF 18372 bytes
SHA-256: de268141b05bea9b1495c1fa2f8869aaa344e302c55e2a170341e0edf1690c4e
font_02_sfnt_off00014cd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CD1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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