Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ea2c1c9f8c822f7…

MALICIOUS

PDF

204.9 KB Created: 2020-11-23 22:51:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: c96eb05221af056e931679217f19fc64 SHA-1: e1f36b28f1945b097bf5d9a5416465874342d3ce SHA-256: 7ea2c1c9f8c822f7e682c838fe94c96793a8481c4c31d9979ed8535db7cd564c
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 support its malicious nature. Although no scripts were explicitly extracted, the presence of embedded URLs and the critical heuristic firing for a malicious redirector suggest the document is designed to lead the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffmen.ru/123?utm_term=strongest+greek+mythology+weapons In PDF document text
    • https://nerutaraludu.weebly.com/uploads/1/3/4/6/134672403/xutujamelibipabale.pdfIn PDF document text
    • https://naxulukituno.weebly.com/uploads/1/3/4/8/134879135/xamubewijugikowonaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370074/normal_5f8862fc5f2a9.pdfIn PDF document text
    • https://mirivibi.weebly.com/uploads/1/3/4/2/134234555/8348476.pdfIn PDF document text
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/bitopaweruxivel.pdfIn PDF document text
    • https://luwobidope.weebly.com/uploads/1/3/0/8/130814225/burolowe-zesogetot-vototowivezux-bizimexudolova.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/8e42bfb8d1b0f.pdfIn PDF document text
    • https://xuxijewurinawux.weebly.com/uploads/1/3/4/6/134699439/35b3bbb.pdfIn PDF document text
    • https://redupasatoli.weebly.com/uploads/1/3/4/4/134446027/zebobojivawaduj-zewusafugopob-lozawasabutize.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/gurafoga/85203605767.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/pavadipajifoladir.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002b5a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B5A6 4156 bytes
SHA-256: f9d1a3228e8de7b056d940a7fbb2eb5feff32b94fa41af2836eb20eaa8d60e8e
font_01_sfnt_off0002c452.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C452 5592 bytes
SHA-256: 4c774da657f3fd0da424eeaa53b2398f89d52c7d22481447b4a99694ad6a3018
font_02_sfnt_off0002d747.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D747 20372 bytes
SHA-256: 39bf57a615aec6069b3cee38d9269a41c1749e1a549ab13297449ec7202c5001
font_03_sfnt_off00030cfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30CFD 17280 bytes
SHA-256: 6ba66364ef2d8a3ddb43f12de67c7978d13464c528a2b381e7a6703a815b29a0

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