Malicious PDF — malware analysis report

Static analysis result for SHA-256 841d9069c938620d…

MALICIOUS

PDF

83.0 KB Created: 2021-06-11 12:17:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8621245694e195670b04daf15b4ea26d SHA-1: 72808b3a2ec5b35e8ed974fdf65a6c087141f599 SHA-256: 841d9069c938620d0622f16128f230936374e16a2377ef66b5d37a1b4e25157a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though partially corrupted, contains text related to 'movies download', reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://chcial.ru/pbw?utm_term=toxicwap+movies+download+2021
    • https://cdn-cms.f-static.net/uploads/4471514/normal_60c2ad9354f6b.pdf
    • https://cdn-cms.f-static.net/uploads/4383802/normal_6026c8fa4d49f.pdf
    • https://cdn-cms.f-static.net/uploads/4464869/normal_60bd262e009be.pdf
    • https://cdn-cms.f-static.net/uploads/4471683/normal_60c12ea165dba.pdf
    • https://static.s123-cdn-static.com/uploads/4374686/normal_6000531f85161.pdf
    • https://cdn-cms.f-static.net/uploads/4490369/normal_60262e8530351.pdf
    • https://cdn-cms.f-static.net/uploads/4411001/normal_60301c2d3b615.pdf
    • https://cdn-cms.f-static.net/uploads/4492573/normal_6057a170383fd.pdf
    • https://cdn-cms.f-static.net/uploads/4481270/normal_60396b9c09909.pdf
    • https://cdn-cms.f-static.net/uploads/4378404/normal_603b1629ac590.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/976bf588-645c-443f-97a9-dc57c1402bdf/guliduligitunu.pdf
    • https://uploads.strikinglycdn.com/files/6e8019e2-250c-4a38-bad5-e49d184cb120/reboxusadekajigasudixi.pdf
    • https://uploads.strikinglycdn.com/files/e2c0a230-e818-426e-94f8-2fbbce9124aa/el_pequeo_vampiro_pelicula_espaol_latino.pdf
    • https://uploads.strikinglycdn.com/files/c8ab0f1f-812d-46ba-9282-9db21ace2cc7/1983_code_of_canon_law_amazon.pdf
    • http://pebokuvog.pbworks.com/w/file/fetch/144892464/sq_m_to_sq_yard_converter.pdf
    • http://nipekari.pbworks.com/f/does_polonius_deserve_his_fate.pdf
    • https://uploads.strikinglycdn.com/files/887e14d5-eb2a-4167-a23f-6289ead749fe/1570167139.pdf
    • https://uploads.strikinglycdn.com/files/e9f16c80-7b18-4862-b538-fccd6a220cae/love_story_lyrics_mariah_carey.pdf
    • https://uploads.strikinglycdn.com/files/3b41467e-f532-4fbf-b1e2-7bd780bc5400/be_at_ease_with_yourself_meaning_in_marathi.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001065b.bin
5dbff04425e432616d736690856bade4b560e9c2d276ccc453bdbf9ffadd7deb
pdf-font-stream PDF embedded font (sfnt) at offset 0x1065B 5616 bytes
font_01_sfnt_off00011987.bin
fafb0e0b16b6ebab35a9f932778282325271a860f6d987d60202eecac779bc94
pdf-font-stream PDF embedded font (sfnt) at offset 0x11987 10764 bytes