Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ea4008816ededd6…

MALICIOUS

PDF

72.6 KB Created: 2020-11-20 07:48:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: d6d146a6a200853a54519d0465e77410 SHA-1: 30b730a8138a80b6568ef4e66d3b097009947154 SHA-256: 4ea4008816ededd659b45199c0d9963a266fc7b9c4369a5518b0735707dce13e
214 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, including a critical link to a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external PDF link farm, suggesting an attempt to manipulate search engine results or distribute malicious content. The ClamAV detection and ML classifier further support its malicious nature, likely as a phishing or malware distribution lure.

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
  • 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.
  • 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.
  • 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://gettraff.ru/123?utm_term=hermon+high+school+athletics In PDF document text
    • https://wugepazi.weebly.com/uploads/1/3/4/3/134348030/7fa1d713d47b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410448/normal_5fad5debb98e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384308/normal_5f90dd26dedd6.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/tadib-pepalitegugoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376610/normal_5f9a794bd5af1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393349/normal_5f94c3c8af2c0.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/fasanag/27657177082.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c95a6ce6-0c4b-484e-99ec-7d2abcdda152/98503279551.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/calendar_2019_islamic.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2be9352b-6e7d-4077-ae8c-e8b84f735978/54753963584.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa778dd6-f352-4eed-8b5f-7bb54bd4a916/nolimasifigasitovi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2a26f03-25db-4ec5-a2e8-edf84f0b9c92/leledowuribedumofaz.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/35892138432.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65493381-d332-4d6e-be6f-869b92e628f2/guilds_of_ravnica_draft_tier_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88393a7b-e4e0-4a60-b284-e1a70398b4c8/sao_integral_factor_reroll_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/wumajegomekaxalejufinu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC829 5176 bytes
SHA-256: a80454d4baf9f67d248cb2c3934da643dd2e2f65f44b00ee1ef67398e8fee87c
font_01_sfnt_off0000d99d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD99D 11320 bytes
SHA-256: 93bc14ac23d0f64e29cff5c6fe8fce75093c48484a1db7525f523255f7d4c5f8
font_02_sfnt_off0000ffe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE2 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

Open this report in the interactive analyzer, or submit your own file for analysis.