Malicious PDF — malware analysis report

Static analysis result for SHA-256 29c2d86f8dd6ea34…

MALICIOUS

PDF

70.3 KB Created: 2020-11-24 15:01:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 608e146bf2c1fe5e198b26b032bcc78e SHA-1: 399a710e57235c7763211f2d3eb4feb00fcc63c3 SHA-256: 29c2d86f8dd6ea344faf13e9d90422d7962e2672bc774cfe9f5beb83ec17d23a
214 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for redirecting to known malicious infrastructure and a PDF link farm. The ML classifier also strongly indicated maliciousness. The embedded URLs suggest an attempt to lure users to external sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffking.ru/strik?utm_term=when+she+woke+pdf+free In PDF document text
    • https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/misiw.pdfIn PDF document text
    • https://fezivalolir.weebly.com/uploads/1/3/4/4/134461714/kuvosonexetajiwug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417807/normal_5fae8ed856f25.pdfIn PDF document text
    • https://wikazire.weebly.com/uploads/1/3/0/9/130968935/jagupinimuduxi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484635/normal_5fbc05903c202.pdfIn PDF document text
    • https://notesigul.weebly.com/uploads/1/3/4/6/134689219/09677257e8d7468.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/8f276cd5-4bde-4b6c-a7f5-460746f47746/34054330970.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/6894498734.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6c6b732-6d79-4afa-bcf3-2e84f5b9c79c/joel_harper_miami_university.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15d61fad-9cc6-44e9-b3a0-47a54d1efcc1/tixurowexovi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e012b87b-c983-445f-ba3d-b5b37042de37/78478166650.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_off0000ca8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA8E 4716 bytes
SHA-256: 8dd8730c6ee2b6836290476779032544a528db1a781eca6aacb22035743822b3
font_01_sfnt_off0000da91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA91 10604 bytes
SHA-256: 12d488a0b6c0cea26c7f636f7719ad65e36ca6e6944fbe29345c6b4a27089bd1
font_02_sfnt_off0000fe44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE44 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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