Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b01464fb6fa89c5…

MALICIOUS

PDF

95.7 KB Created: 2021-09-16 01:49:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 750cf80a07d0fa601c09ce479b5cc1aa SHA-1: 42b0b1a65b6a1acfbad8558b9b641a3f310f4228 SHA-256: 6b01464fb6fa89c5b302311376417d74e23fbe601b257c747ec749cdcb7f0494
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm or phishing lure. The 'SE_CALLBACK_LURE' heuristic specifically identifies the document's attempt to trick users into calling a phone number, a common tactic in tech-support scams and callback phishing. No scripts were extracted, but the presence of external URLs and the callback lure heuristic strongly suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://oniceh.ru/uplcv?utm_term=dpi+normal+redmi+note+9 PDF link annotation
    • http://goodwill.pl/userfiles/file/vuxesamefetokazutivinive.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f29413c7ba---sovogabojetiza.pdfIn PDF document text
    • https://matagujrischool.com/admin/imagetemp1/file/midepodogunaxigexepekogu.pdfIn PDF document text
    • https://ocw.tw/uploads/files/tiwodikovu.pdfIn PDF document text
    • http://altadirezione-consulting.it/userfiles/files/14639192709.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f4fc80a2b1---maruk.pdfIn PDF document text
    • http://eros-arena.name/eros/userfiles/file/sizepuwalamewa.pdfIn PDF document text
    • http://giaphatmed.com/upload/file/81460590156.pdfIn PDF document text
    • http://xn--80aiddhbkcq5bcaz.xn--p1ai/upload/files/wefepudekutazevuxibi.pdfIn PDF document text
    • http://xn--9p4b29dncp2cc6y.net/upload/fckeditor/file/josabegokojidepifisunaj.pdfIn PDF document text
    • http://koutingchina.com/upload/files/jajubaxesofugu.pdfIn PDF document text
    • http://csc0898.com/userfiles/file/20210910195512_yhnpy4.pdfIn PDF document text
    • https://belitour.ir/basefile/belitourir/files/fepomelivuti.pdfIn PDF document text
    • https://hse.tw/upload/file/mekirudoxisovekaw.pdfIn PDF document text
    • https://www.weboonline.com/ckfinder/userfiles/files/tomud.pdfIn PDF document text
    • https://zenithoverseas.com/assets/userfiles/files/junutozexeganimex.pdfIn PDF document text
    • http://alrabbancapital.com/file/files/62521347666.pdfIn PDF document text
    • https://warsztatgdynia.pl/app/webroot/media/files/16656511020.pdfIn PDF document text
    • http://sorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/50328813598.pdfIn PDF document text
    • http://goldmustang.ru/files/files/nukazoremik.pdfIn PDF document text
    • http://fli.edu.mn/ckfinder/userfiles/files/devesuzikawemumigexorig.pdfIn PDF document text
    • http://mywayrtk.org/userfiles/file/lewizu.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161413ca041c2b---gaxovubavisoxonod.pdfIn PDF document text
    • http://naviway.su/upload/files/58856596352.pdfIn PDF document text
    • http://hyeminshop.com/DATA/files/reduvizabibavadigefifagas.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_off000109e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109E6 20764 bytes
SHA-256: 04bc6be7165dc727fe47fda5ebc52109b8e8a9c865095344c893ad831478c3de
font_01_sfnt_off00014145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14145 10552 bytes
SHA-256: 67dd9879e081c1c0df93572a5333a20e38495e4e4e8e92e7aafed33343c0ba9c
font_02_sfnt_off00015942.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15942 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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