Malicious PDF — malware analysis report

Static analysis result for SHA-256 e029111fce64a612…

MALICIOUS

PDF

76.4 KB Created: 2021-03-09 09:49:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: eea70fba600dc7aacf06f38244d10730 SHA-1: 8e6ead10d5996551f6db4be5737d61de2833435a SHA-256: e029111fce64a612e933a7d27914ba61700867873e69cab897db964a67a28db1
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, with one prominent URL suggesting a lure related to 'dirt bike near me'. The presence of multiple disposable domains and link farms points towards a campaign designed to distribute malicious content. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with phishing lures that redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dugedepap.ru/strik?utm_term=apollo+250+dirt+bike+near+me PDF link annotation
    • http://konsalting.info/vifudutatujaej0gy.pdfIn PDF document text
    • http://kedugobepuged.mywebcommunity.org/self_introduction_in_interview_format.pdfIn PDF document text
    • http://nat-fru.space/country_music_christmas_sweaterhy8v9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468259/normal_5fd0bcc2e5c10.pdfIn PDF document text
    • http://aarbuz.space/29556357145sjydp.pdfIn PDF document text
    • http://hightrade.club/getabirikarojegeeb7l.pdfIn PDF document text
    • http://swiss-gear.shop/dopedubivofixafabirefatiwndsb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416653/normal_6040affb29aee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387037/normal_5fc61440f0d55.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458144/normal_5ff656e96e444.pdfIn PDF document text
    • http://unlockdeals.shop/who_sells_yard_machine_riding_lawn_mowers7v8ma.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426944/normal_6022d1ed6f40a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501484/normal_5fdafdf550aeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443619/normal_60156392736a4.pdfIn PDF document text
    • http://alteramaks.world/philips_avent_3-in-1_electric_steam_sterilizer_instructionsc8qnz.pdfIn PDF document text
    • http://item-get.top/139745252561uyqr.pdfIn PDF document text
    • http://antileqphh.site/towolenowarujosusojisototzrbn9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459321/normal_5ff970be0bc4d.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/ronenitevodo/what_questions_are_asked_in_articleship_interview.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/kewesofagitigog.pdfIn PDF document text
    • http://rurebafib.onlinewebshop.net/67172674509.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_off0000ee82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE82 5516 bytes
SHA-256: 16834df45c21e9e0109a56900a07bef810b6c9e4721162c9cd4be9ba9344ac96
font_01_sfnt_off00010132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10132 10168 bytes
SHA-256: 094006fd1f0f5ad7c487292f0cc9f69a42abb765fdff5b0a3256078756388163

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