Malicious PDF — malware analysis report

Static analysis result for SHA-256 060f0903abe8e5a0…

MALICIOUS

PDF

83.4 KB Created: 2021-03-13 14:56:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: cf550d15429c6419a0f9d7498a208d07 SHA-1: c8cd4944ce1ab449706d65d9bacff7e775af76d3 SHA-256: 060f0903abe8e5a08d84e4c5e8343bc369cd0c6105aade0f7084d71f5d972fbc
146 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The sample was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of a callback phishing lure. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and numerous URLs are embedded, many pointing to disposable domains. The presence of external URIs and the link farm heuristic indicate a potential attempt to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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) or Microsoft license-boilerplate 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://lozipotod.ru/wix?keyword=panasonic+cordless+phone+manual+kx-tg1611 PDF link annotation
    • https://cdn.sqhk.co/fedovipawe/3gefcjh/lego_batman_beyond_gotham_3ds.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422912/normal_6031fc7cd369d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457848/normal_600b94c1e9bd7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384316/normal_5ffb8d9fa855e.pdfIn PDF document text
    • http://towufato.mywebcommunity.org/kazivinijabot.pdfIn PDF document text
    • https://wozexofinudere.weebly.com/uploads/1/3/5/9/135984457/f5b2d25c9a685f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460682/normal_604a52cd848cb.pdfIn PDF document text
    • https://cdn.sqhk.co/gavezexu/0jcjjhf/penguin_slice_ice_game.pdfIn PDF document text
    • https://tawajuwu.weebly.com/uploads/1/3/4/8/134850210/3951739.pdfIn PDF document text
    • http://fuzubijixulux.mygamesonline.org/41981104913.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501634/normal_60147485c25b1.pdfIn PDF document text
    • https://cdn.sqhk.co/limizolaxa/gYgdgdJ/46245374965.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486036/normal_5fdeeaba119c4.pdfIn PDF document text
    • http://jeseselanus.scienceontheweb.net/17917827491.pdfIn PDF document text
    • https://cdn.sqhk.co/nozedimasav/qjdjfeV/xeseronip.pdfIn PDF document text
    • https://kupowenip.weebly.com/uploads/1/3/4/0/134042521/rufakuvuwojon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462038/normal_5ff6376837fbf.pdfIn PDF document text
    • http://wapividazofar.scienceontheweb.net/download_light_novel_arifureta_bahasa_indonesia.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rususekobijo.myartsonline.com/hallelujah_chorus_satb.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001054d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1054D 5856 bytes
SHA-256: ab6b7edf69a96c757cb34fe17af02027de791d1e6dc6a6f94750cd1ae5b14cf9
font_01_sfnt_off0001191f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1191F 11556 bytes
SHA-256: a64b519fe991b2dde3f58bda3f04c59951958c9868280f6302ce37b382de7d6d

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