Malicious PDF — malware analysis report

Static analysis result for SHA-256 39e2f054ce6a0c86…

MALICIOUS

PDF

72.7 KB Created: 2021-01-05 07:24:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c122f702baed8a76792425039763a2ba SHA-1: 95bd44ef5420a717c1d2e48242e97d7392c9b07e SHA-256: 39e2f054ce6a0c86661f5c0d023d9086ffbecce979396c506b022f0c6607b228
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'https://traffmen.ru/aws?utm_term=holy+paladin+gear+guide+bfa'. This URL is likely used to lure the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious, and ClamAV detected it as 'Pdf.Phishing.Trojan-d2568dad23a94d95-10044375-0'. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, suggesting it's not intended for direct user reading but rather to host the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/aws?utm_term=holy+paladin+gear+guide+bfa In PDF document text
    • https://cdn.sqhk.co/bedogipaxog/6DkjjcX/fireman_carry_roll.pdfIn PDF document text
    • https://cdn.sqhk.co/wotutovebo/ijhmgfH/luzibuwo.pdfIn PDF document text
    • https://cdn.sqhk.co/jazorawa/gegchcr/billie_eilish_lyrics_i_love_you.pdfIn PDF document text
    • https://cdn.sqhk.co/vujenibolo/TQiehgb/calls_blacklist_pro_call_blocker_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/sozaxejiv/taijiir/d_day_history_channel.pdfIn PDF document text
    • https://cdn.sqhk.co/jogepirar/ggghb67/44800702343.pdfIn PDF document text
    • https://cdn.sqhk.co/jepipovi/hihhq3q/zombie_strike_war_3d_huntington.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://uploads.strikinglycdn.com/files/975afaf6-5574-4c23-849e-80c59af70865/sedufo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e11adbe2-e5d7-4560-afe1-08424f0da65b/diff_between_unicorn_and_pegasus.pdfIn PDF document text
    • https://s3.amazonaws.com/wemupajese/xiravupixinajupujopunu.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/geothermal_energy_powerpoint_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44f61164-8a9c-421d-a996-c33422751d8e/71417991916.pdfIn PDF document text
    • https://s3.amazonaws.com/lirivugu/49975491682.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/gavaka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97b8f71f-93c8-48f0-affc-1de15ec12104/ripejemituvolorosobivuzi.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/64966225920.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0CF 5036 bytes
SHA-256: 755bea5f892fcaf061f248408a5de303107a9b95601f4acb0f20b526a42dff01
font_01_sfnt_off0000e1f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F3 11024 bytes
SHA-256: da06e443b8ebf5df1c89d05402cf22e310c28e33a9b9ff139b8c6b011a475ca0
font_02_sfnt_off000107ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107BA 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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