Malicious PDF — malware analysis report

Static analysis result for SHA-256 bafa08da8f0b37ba…

MALICIOUS

PDF

80.3 KB Created: 2021-02-12 01:50:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: e53cf36d894b12ba257c908fc01476bc SHA-1: 90e1ea5a2358a6f40fc3bad7ac9de1a9a9e62cc5 SHA-256: bafa08da8f0b37ba29fb414032c949802b6a034f905852227a6760a3a60acd3f
126 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on disposable domains and appear to be part of a link farm designed to attract search engine traffic. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The embedded URLs suggest the document's purpose is to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://leonvi.ru/wix?keyword=archangels+of+magick+pdf+download PDF link annotation
    • http://fruit-ital.space/vigujiwebofufujatifoyvq0d.pdfIn PDF document text
    • http://reflectionss.space/80727051636voxzo.pdfIn PDF document text
    • https://nozonefabizeg.weebly.com/uploads/1/3/0/9/130969368/3942571.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393624/normal_600e5516b7c41.pdfIn PDF document text
    • https://kixivoveluvib.weebly.com/uploads/1/3/0/7/130775150/givodo_temirowij_suxuseligirim_xewobozirizak.pdfIn PDF document text
    • https://vugevosuza.weebly.com/uploads/1/3/5/3/135328642/diwawelemowafav_gikonisobo.pdfIn PDF document text
    • https://lupoxever.weebly.com/uploads/1/3/1/4/131413766/5ae9d.pdfIn PDF document text
    • http://hayatevesigar.online/origami_live_app58vip.pdfIn PDF document text
    • http://eferevole.com/les_diffrents_types_de_phrases_ce1cs2j9.pdfIn PDF document text
    • http://canonsburglake.com/29770354818ia6hi.pdfIn PDF document text
    • https://pezomivagijo.weebly.com/uploads/1/3/5/3/135392772/gezexirizepo.pdfIn PDF document text
    • http://verifedform.com/fifajibogojebuxizuteowb8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462038/normal_5fe99ec18adda.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
    • https://s3.amazonaws.com/julaxel/38371621304.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/vebusujo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC6 5424 bytes
SHA-256: e1813d950bbc9a1d20e8e9ea88260b5d680ead24b1335cc0fd117d81a6e3186a
font_01_sfnt_off00010209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10209 10340 bytes
SHA-256: 5d0101ac274603a3015211cd3278813f5f1adaf175cdf7bbae5781aee62131e5
font_02_sfnt_off00012576.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12576 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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