Malicious PDF — malware analysis report

Static analysis result for SHA-256 5914c717a9d02b74…

MALICIOUS

PDF

82.3 KB Created: 2021-01-01 00:00:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 3e7b5e22a85b5ab0d5ad2096aec79066 SHA-1: e8799982f663e677277410375a9ab649921f45f4 SHA-256: 5914c717a9d02b744590cd4362f87674a24e5cb40f352fc3dae5722595bdc46d
214 Risk Score

Malware Insights

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

The PDF contains a large number of external links, with one identified as a malicious redirector. This suggests the document is part of a link farm or phishing campaign designed to direct users to malicious sites. The presence of embedded JavaScript, though not explicitly detailed in the provided evidence, is a common method for executing malicious actions within PDFs, such as initiating redirects or downloading further payloads.

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
  • 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/strik?utm_term=cinema+light+box+primark In PDF document text
    • https://sibevuguz.weebly.com/uploads/1/3/4/8/134859718/davufamufi_bomodos_vupobam.pdfIn PDF document text
    • https://duzuvopewawufos.weebly.com/uploads/1/3/4/4/134491429/xadikizo.pdfIn PDF document text
    • https://cdn.sqhk.co/vimanagadu/tighgjf/sky_accessories_contact_number.pdfIn PDF document text
    • https://cdn.sqhk.co/zenetofuma/S7pdWUL/gugozaki.pdfIn PDF document text
    • https://bosategovatoz.weebly.com/uploads/1/3/4/8/134871083/8147851.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://s3.amazonaws.com/tidigudetefumof/sadus.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/22449523639.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42e113ec-2052-4850-8506-2953e1eca57d/96504693506.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a40d4ea-0b6a-4c5f-a365-d4ff07089c64/70109964767.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/credo_catlico_portugues.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c4d50de-790a-40aa-b9ab-b18dad8b9219/super_monkey_ball_sakura_edition_review.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/delegation_process_in_management.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f69b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF69B 5140 bytes
SHA-256: 25902d83f7c7cbf23f776557621eaf794b77bd721933e431add24107224b0af7
font_01_sfnt_off000107dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107DD 11308 bytes
SHA-256: 91eae805a21dd384af125a45b6917274e8c53bbaf39099e1598961f07d298215
font_02_sfnt_off00012e75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E75 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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