Malicious PDF — malware analysis report

Static analysis result for SHA-256 7afcc0498225ed78…

MALICIOUS

PDF

74.8 KB Created: 2021-02-24 13:31:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 968687ac152b4f4048ec8cce962f2924 SHA-1: eca45f547b6354cce335567813f1404429626870 SHA-256: 7afcc0498225ed7872e395b79c29daf88dacb605b91c6cf130958de48ec1cea9
186 Risk Score

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 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.
  • 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://baarspo.ru/wix?keyword=ffa+interview+questions+and+answers PDF link annotation
    • https://cdn.sqhk.co/zolulesar/PAiahiH/marco_s_pizza_nutrition_large_pepperoni.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427504/normal_60302e83ed297.pdfIn PDF document text
    • https://wadaxoleda.weebly.com/uploads/1/3/5/3/135311928/takigomiwobim.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368954/normal_6001e03b89553.pdfIn PDF document text
    • https://cdn.sqhk.co/tavaxikanabu/3ifyAia/95453186185.pdfIn PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/4e11a.pdfIn PDF document text
    • https://cdn.sqhk.co/puberufibo/ihHjjcW/acdsee_photo_studio_professional_2020_tutorial.pdfIn PDF document text
    • https://cdn.sqhk.co/zezaxemepe/i8gfcha/sazutatamakifigulete.pdfIn PDF document text
    • https://cdn.sqhk.co/neseleko/iyJigAL/daferito.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501029/normal_5fe24dd1d4803.pdfIn PDF document text
    • https://cdn.sqhk.co/dofubetu/CzLQjj4/farm_town_cartoon_story_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/xujifomevesa/hh5ifD6/16525888113.pdfIn PDF document text
    • https://sedovabopidixo.weebly.com/uploads/1/3/0/8/130813108/f12adf0045eb6f9.pdfIn PDF document text
    • https://cdn.sqhk.co/tipadasa/jv4RZgj/69569153154.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/lonedatexasegafud.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/mopubebajevigo.pdfIn PDF document text
    • http://ruzovufu.epizy.com/hd_video_song_er_website.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/fojefakozelipen.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_off0000ea44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA44 5104 bytes
SHA-256: fd59cc15ffe9587537d3129ad60dc1d79a48cca12d836eefd76a4d8759220468
font_01_sfnt_off0000fbc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBC6 10088 bytes
SHA-256: d3bc9d5e0b6adfa22d348b459cf42407997868544111bcd8c9311395e9e2b294

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