Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d60602e2817ff20…

MALICIOUS

PDF

85.0 KB Created: 2021-01-29 04:03:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 83c893a36f4b43f64e4cbda005f227d0 SHA-1: 7a247d2fd23e814ea3fc5c01f0fe2c1b4e4cb51d SHA-256: 9d60602e2817ff20c2a9459521da6e2e8ed59270108a4b5e8bc24cb3ecb50408
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV. It contains numerous external links, with one specifically pointing to a suspicious domain ('maypoin.ru') and another to a disposable domain ('sqhk.co'), suggesting a phishing or malware distribution attempt. The PDF structure and embedded content indicate it's designed to redirect users to potentially harmful sites, likely as part of a spearphishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/123?utm_term=equinox+bloomfield+hills+membership+cost PDF link annotation
    • https://cdn.sqhk.co/lexebogefaj/dSLZsji/lolaxilege.pdfIn PDF document text
    • https://cdn.sqhk.co/bewewojiwo/y8VjeNO/galaxy_wallpaper_hd_pc.pdfIn PDF document text
    • http://magic-spring.com/rofisuvuk1jy5i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500665/normal_5ffe93980b6d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383460/normal_5fdbe01250b06.pdfIn PDF document text
    • https://cdn.sqhk.co/funixatugesi/fAhaeyc/wawodonotifovewane.pdfIn PDF document text
    • https://peliretoru.weebly.com/uploads/1/3/3/9/133997281/73719a.pdfIn PDF document text
    • https://rodagekutav.weebly.com/uploads/1/3/5/3/135313742/velerokovoden-fulamomuzixexox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416143/normal_5fe786ed95cb0.pdfIn PDF document text
    • https://cdn.sqhk.co/verexoleki/Nggid2w/91589578214.pdfIn PDF document text
    • https://kofivenemiwelew.weebly.com/uploads/1/3/1/3/131380814/c5590.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487192/normal_600a038241ca2.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://zegaruso.rf.gd/bimco_supplytime_2005_word_format.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_off0001025f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1025F 5356 bytes
SHA-256: 60db4c5d59f4626cdf9a55b9c100f8296ecf04e12ea39641e4308dbcbcdcb68f
font_01_sfnt_off0001146a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1146A 10700 bytes
SHA-256: ace17b822f29834870253ff06bddeee9e69097065918c7ce8ef4c3e7f832e4f9
font_02_sfnt_off000138fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138FB 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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