Malicious PDF — malware analysis report

Static analysis result for SHA-256 89d076e31e31e594…

MALICIOUS

PDF

69.5 KB Created: 2020-12-14 19:54:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ef813c3e881b854f5d6f724612614dfd SHA-1: 93f985065fd814198e7cb6d4e78443f6f9d816a9 SHA-256: 89d076e31e31e5940140ef37daae2065545b63e1cee8b472d3b5d89f88d0132d
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a significant number of external links, with one heuristic specifically identifying a 'PDF_SEO_LINK_FARM'. The primary malicious URL identified is trafftec.ru, which is likely part of a phishing or link-farming operation. ClamAV also detected this file as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0', further supporting a phishing or malicious intent.

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://trafftec.ru/123?utm_term=ingenuity+smart+and+simple+playard+moreland PDF link annotation
    • https://kegazesawatodo.weebly.com/uploads/1/3/4/3/134378031/7a80fe2c7.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/selivuvumepaveb/garuvotomejavonoz.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/reported_cases_of_zika_in_costa_rica.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/35948056108.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/025009c8-0e31-485c-b937-f3793c3aae79/wusojimidoniseg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c01da6d2-046b-4cf1-b655-da73983ac480/kayak_wall_mount_rack.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/negon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0635123b-f697-48f0-9be7-c5a992bd6b52/68302751603.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/simple_contractor_agreement_template_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/usamega.com_powerball_jackpot_analysis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/235e96ae-7d08-439f-95b4-38537546bf83/siturosodokubel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55f006dc-8a99-42ca-b1bd-7fd1e221ec02/547224748.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/925900be-a203-4021-be93-64e0fb0c52ec/alyssa_edwards_miss_gay_america.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01221320-84e0-4bdf-a88d-06497265703f/kadafut.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/physics_uncertainty_questions_and_answers.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_off0000d271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD271 5316 bytes
SHA-256: 26d2f39a6636efab1fbe3e3f4fa1075dce60052ea307353bcf0ef3587ff3c7e3
font_01_sfnt_off0000e47a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE47A 10688 bytes
SHA-256: e3804f7f674fd424146a94f07bdafd13c485ecfa1f1adc51a8148c345ed20183

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