Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b7d084f23b45ac2…

MALICIOUS

PDF

70.6 KB Created: 2021-01-03 06:20:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: cce496b357082fab834a82c62e1ec39d SHA-1: 652a89d2834f3122b9749f0c1d85578727a9abf0 SHA-256: 6b7d084f23b45ac2b630d738b53aa0b06321de12ec8a0e45c812d5c5a9bf48a3
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. The document body, though heavily obfuscated, contains text related to verb conjugation and references the wkhtmltopdf tool, suggesting it's a lure. The embedded URL points to a suspicious domain, likely used for credential harvesting or malware distribution.

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
  • 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://traffking.ru/aws?utm_term=coniugazione+del+verbo+cadere+alla+forma+passiva PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408323/normal_5fdaeb5c906ad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389805/normal_5fe57f04e814d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482847/normal_5fb55254b29fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405179/normal_5fa12e7f57b08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368249/normal_5f905d037e4b1.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/a871f5ed-6d90-4299-8d2d-61a99b1decfb/38930385929.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/unstuffed_decluttering_your_home_mind_and_soul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e372c31-46fa-4841-9fd3-86b0374f1be0/types_of_isoline_maps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/653514db-5d2f-4078-87ae-babe5970cfc8/sifapaw.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/degree_of_comparison_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/71658306636.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/18331353206.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_off0000c5d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5D3 5548 bytes
SHA-256: 12e0dfd52f0a3d8c9b5e8f0cd317c9eacebd9d42ac7451fc63e415422e0b2739
font_01_sfnt_off0000d8a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A8 11196 bytes
SHA-256: ff584aac93a98155a5cc17c50c1fd72e9962f79d3698baaddaffae76485debfa
font_02_sfnt_off0000fd38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD38 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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