Malicious PDF — malware analysis report

Static analysis result for SHA-256 afac1b565a0c17e6…

MALICIOUS

PDF

77.4 KB Created: 2021-03-16 01:01:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: e4529beca57f6141c2427d4641c4d708 SHA-1: 5f5285f269651ed4828e9effeb068c3cc8bb4c72 SHA-256: afac1b565a0c17e6278578067b79afcbf95540ddfb484bd3508bb10d20fe19f6
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains, and is flagged as a link farm. The document body, though heavily obfuscated, contains text related to movie videos, suggesting a lure to trick users into clicking malicious links. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for malware distribution or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://nipisod.ru/123?utm_term=badrinath+telugu+movie+videos+songs+free PDF link annotation
    • http://sberin.xyz/802400938407nt4x.pdfIn PDF document text
    • https://cdn.sqhk.co/tupujokuz/fACiegd/simple_cover_letter_template_free.pdfIn PDF document text
    • http://triple-doska5.club/pugunuvubipobakakawilufe2u6e.pdfIn PDF document text
    • http://metalllift.ru/simple_example_of_searchview_in_androidczlw3.pdfIn PDF document text
    • http://cozyplacefor.rest/63900255057i6erk.pdfIn PDF document text
    • http://raifaisentgo.online/2004_ford_focus_battery_wiring_diagrampdcld.pdfIn PDF document text
    • http://vir-tus.com/detroit_red_wings_charter_planeu2mxf.pdfIn PDF document text
    • https://cdn.sqhk.co/jofomopunaw/hbhihjY/68188395406.pdfIn PDF document text
    • http://meetsalle.xyz/zelupolaxidufil0q7l.pdfIn PDF document text
    • http://helpcenter.business/3506311313a29rq.pdfIn PDF document text
    • http://pc-remont.website/niv_study_bible_for_androidzyniz.pdfIn PDF document text
    • https://cdn.sqhk.co/nezerozara/jg0hcia/30319604374.pdfIn PDF document text
    • http://saleproducts.pro/34504608495t7clo.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://s3.amazonaws.com/pobixedele/vezixex.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/wowarejasopofodawukoja.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/39153629832.pdfIn PDF document text
    • https://b3079848-b07e-4d89-9244-05dfa5dd91fe.filesusr.com/ugd/3ab5ed_c02f4b0858ed46a68c3af49ba361314f.pdf?index=trueIn PDF document text
    • https://d427386d-3434-45d9-8802-370857a594f4.filesusr.com/ugd/accd1f_e6a06f6ad03e42f69f5dfb12cdb00f7d.pdf?index=trueIn PDF document text
    • https://f7e05ffc-afae-4d19-be15-7e9c659e5e5f.filesusr.com/ugd/72f62b_8887e698c73a48fdabb59a52e34965a5.pdf?index=trueIn 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_off0000e350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE350 5312 bytes
SHA-256: ec7cec89b353ce1cc541beeaa1aa4a1490ec67d699492faa30964e62228d984d
font_01_sfnt_off0000f534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF534 10616 bytes
SHA-256: 06150e27ca79c967b38eb50459cb434de4398206f1ebb7b3acef6117a2e68dfd
font_02_sfnt_off00011991.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11991 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

Open this report in the interactive analyzer, or submit your own file for analysis.