Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce3809b4d2a70cd6…

MALICIOUS

PDF

74.7 KB Created: 2020-12-18 15:20:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 515690ba393a14ecc8c27940f10e0adc SHA-1: 928610facb87f40336e9a10e6d736771b21666ec SHA-256: ce3809b4d2a70cd645f88eb5074d1e447928e4c8c62dd86533231db626a5dd19
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were extracted, the embedded URL is the primary indicator of compromise, likely leading to a phishing page or a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • 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://traffine.ru/strik?utm_term=popeyes+interview+questions+and+answers In PDF document text
    • https://static.s123-cdn-static.com/uploads/4485568/normal_5fc749da3e3ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367299/normal_5fd2cbe171afe.pdfIn PDF document text
    • https://xigeworimejol.weebly.com/uploads/1/3/1/4/131483719/9770019.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://static1.squarespace.com/static/5fc0bebbcd1e280355d37542/t/5fc35a27f3de5e49b5ceef68/1606638120101/cpm_chapter_7_closure_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/zobaxinafepaki.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc31c7792c50b1a1e85f0fa/t/5fc380b0a97599144e64f6f5/1606647985982/rigujebiwazusup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0edd1954-f9bf-472d-bf5e-33e5bdf687ff/66923499779.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e2fd6b97992eb55c026f/t/5fc226cc3570fb44d14b60ec/1606559436869/ralelefirezifiwa.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/cet_delhi_polytechnic_form_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9eb16e8-2aed-4631-a2c1-78b9250a6915/30422123749.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/xogiwajo.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_off0000daf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF3 5184 bytes
SHA-256: 9f19bf22ac7d8ea4952c134758d0fd5d6244414292edc3ee52131c18fac05a57
font_01_sfnt_off0000eca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA8 10256 bytes
SHA-256: 3c455bc035f58cbbc6e475f79fe9a8c1b0839bd07e0526b82ff948bea8b5d889
font_02_sfnt_off00010f88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F88 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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