Malicious PDF — malware analysis report

Static analysis result for SHA-256 b67772e686627990…

MALICIOUS

PDF

80.9 KB Created: 2021-02-21 16:47:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: df48f5158c4260e1580098b27e3b39db SHA-1: 8d18201e578a655eca2f671418ae1ddeda0c07a2 SHA-256: b67772e686627990c8fcdfe76c16e3987880ca9537b48ef169c060cedfc9571b
246 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body mentions 'Pokemon go spoofer ios', which, combined with the link farm, strongly suggests a lure for credential phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://digokevun.weebly.com/uploads/1/3/4/7/134747151/noxozorofulifoxoxid.pdf.
  • 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://jottigo.ru/wix?keyword=pokemon+go+spoofer+ios PDF link annotation
    • https://digokevun.weebly.com/uploads/1/3/4/7/134747151/noxozorofulifoxoxid.pdfIn PDF document text
    • https://dojexivosofu.weebly.com/uploads/1/3/4/3/134348646/d601e5284f3.pdfIn PDF document text
    • http://rojelafireko.iblogger.org/29711660186.pdfIn PDF document text
    • https://muwefojiginilu.weebly.com/uploads/1/3/4/5/134512592/2832217.pdfIn PDF document text
    • http://fruit-ita.fun/red_blue_classic_keyboard_themes1w44e.pdfIn PDF document text
    • https://japarikadag.weebly.com/uploads/1/3/4/1/134108792/8441343.pdfIn PDF document text
    • https://xolijusir.weebly.com/uploads/1/3/4/0/134016651/sulibuxaneliva.pdfIn PDF document text
    • https://xaminipa.weebly.com/uploads/1/3/1/0/131071220/jaresidatajafu-wigarujug.pdfIn PDF document text
    • https://mabunamu.weebly.com/uploads/1/3/4/9/134902385/71d36cd69bd3258.pdfIn PDF document text
    • https://dexekuweda.weebly.com/uploads/1/3/4/7/134705305/5777036.pdfIn PDF document text
    • https://fuzakeraza.weebly.com/uploads/1/3/4/8/134848422/kegido-jimilupezelag-depapiku-tujepidekej.pdfIn PDF document text
    • https://punekoba.weebly.com/uploads/1/3/4/6/134612552/bejobetizunow.pdfIn PDF document text
    • https://rupubonu.weebly.com/uploads/1/3/0/7/130739332/dibekuvug.pdfIn PDF document text
    • https://kesiwupi.weebly.com/uploads/1/3/1/4/131407351/gewigutolixowa-pinutelowamo-jilojelenutuw-paxerewenirilow.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://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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF396 4752 bytes
SHA-256: 37142fac4d75944d4ecfbb3c90b2b91915d8aeeaa6a0463eb449ee5b32c470c5
font_01_sfnt_off0001039d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1039D 10776 bytes
SHA-256: b36af73bf2df7fb49a4fc26d6d904027e312c5cb1ee51fe594e9c536f87d1569
font_02_sfnt_off00012884.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12884 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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