Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b394680babd4894…

MALICIOUS

PDF

88.9 KB Created: 2021-03-23 13:55:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 180aa8c519fe58206ba562ed31101c0c SHA-1: 5c0f0fedff38482fecdf4ae120bbdd4bd2486e0d SHA-256: 7b394680babd48948b12b593de345fde0a5f4156e9a877ad93c1f76243b023c9
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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 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.
  • 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://botokaw.ru/strik?utm_term=robinair+34788ni+replacement+hoses PDF link annotation
    • http://mazers.fun/arduino_due_board_manager_urlbr2cu.pdfIn PDF document text
    • http://mufadetajamojo.iblogger.org/themes_in_romeo_and_juliet_act_1_scene_2.pdfIn PDF document text
    • http://naturalgood.space/fekofegi74arr.pdfIn PDF document text
    • http://randname.ru/pubabi51hcr.pdfIn PDF document text
    • https://vesabigixovo.weebly.com/uploads/1/3/1/8/131857304/3631601.pdfIn PDF document text
    • http://bighome.space/dupimulawezorono8bdsl.pdfIn PDF document text
    • https://cdn.sqhk.co/vaxarogajib/hcsjfOt/stick_it_to_the_man_meaning_and_origin.pdfIn PDF document text
    • https://zejuvuvegodefi.weebly.com/uploads/1/3/1/4/131453892/fedod-xipepogepekef-xutafijefil-retodukuji.pdfIn PDF document text
    • http://mutedagagagexe.22web.org/53591967632.pdfIn PDF document text
    • https://vegofifujudiw.weebly.com/uploads/1/3/4/5/134501805/bedibujez.pdfIn PDF document text
    • https://cdn.sqhk.co/jivazufevi/dzjEhfu/kfc_grilled_chicken_breast_nutrition_information.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/xepululejiwof/33004451662.pdfIn PDF document text
    • http://sewitowapib.epizy.com/10831768456.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/dental_hygiene_resume_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/tubupejevomo/77758215202.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/48169487472.pdfIn PDF document text
    • https://f7f2eb1f-4ce6-40bf-b337-6bcc2c9c1a95.filesusr.com/ugd/dc6899_7e9a3208695444abb49dbfff196088d6.pdf?index=trueIn PDF document text
    • https://1b15a19f-c8c2-4d9d-8c2f-e97aa7ecfe2c.filesusr.com/ugd/eb6c48_d31eac2ef1864ac0965e731ffa55d405.pdf?index=trueIn PDF document text
    • http://gobipubefosoja.epizy.com/98581505112.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 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011ba9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BA9 5844 bytes
SHA-256: 880eb403820709869db8ac9a8d1a6c01dbae5312a5d65f2a615fd481f692114c
font_01_sfnt_off00012f6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F6E 11568 bytes
SHA-256: 2ee30186105226765781a9a3813dd51ccf7164beaf188abba1f63b215df04407

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