Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c04f8b5ba9cc55e…

MALICIOUS

PDF

73.5 KB Created: 2021-03-19 22:29:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 21c2b7bbac242f5ddc0c185934198aeb SHA-1: ba125094f91d08854612d2f3c2c56be9c72d8930 SHA-256: 2c04f8b5ba9cc55e7292080942cd6219f41fe2b8e3a8cde5414a1c6531107c8b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous embedded links, many pointing to disposable domains, suggesting a phishing or link-farming scheme. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of an attempt to redirect users to malicious content, likely for credential harvesting or malware delivery.

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://soxebez.ru/wix?keyword=patons+grace+yarn+sunkissed PDF link annotation
    • https://cdn.sqhk.co/luwonowuwig/hi4jchj/lyb_mania_keyboard.pdfIn PDF document text
    • https://sizelelam.weebly.com/uploads/1/3/4/8/134867910/banapetive.pdfIn PDF document text
    • http://zutumufedige.getenjoyment.net/bandicam_serial_key_and_email_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465250/normal_5ffd052582e01.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413712/normal_5ff5f15aac312.pdfIn PDF document text
    • http://pemotutafid.mywebcommunity.org/30079458231.pdfIn PDF document text
    • http://worozoxiw.sportsontheweb.net/determination_of_refractive_index_of_fats_and_oils.pdfIn PDF document text
    • https://cdn.sqhk.co/jonuwezipagi/eIpujgW/retro_handheld_game_console_review.pdfIn PDF document text
    • https://cdn.sqhk.co/puwidebudojo/JE3tjdX/32032454239.pdfIn PDF document text
    • http://wudaxozibutix.sportsontheweb.net/67782057392.pdfIn PDF document text
    • https://cdn.sqhk.co/xubulozirod/Tshe4je/77025196511.pdfIn PDF document text
    • http://wugumonisukanib.sportsontheweb.net/33281283806.pdfIn PDF document text
    • http://kevebofuru.medianewsonline.com/algebra_1_textbook_hmh.pdfIn PDF document text
    • https://nutolifawivu.weebly.com/uploads/1/3/1/4/131437776/6896363.pdfIn PDF document text
    • https://cdn.sqhk.co/wazikunal/jfieY7S/word_market_level_265.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wororezijetixa.atwebpages.com/risakewuninopiguzofibog.pdfIn PDF document text
    • https://3c86e5df-9a55-47dd-9d5b-c207b25ec6cd.filesusr.com/ugd/72bf36_c0cf37de3bf64e3098360e567d37e05c.pdf?index=trueIn PDF document text
    • https://59548cc9-d6a6-4b2e-bd73-2bfb7290c7b5.filesusr.com/ugd/3fd21f_851b5070186b4002aff799ab54769058.pdf?index=trueIn PDF document text
    • http://pozajuw.atwebpages.com/fijabedemetemibiwewe.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0BF 5244 bytes
SHA-256: 7a5c469eb312a6aa096d1cb5601ed259c0919cb10c1ced7fe45624024ea78878
font_01_sfnt_off0000f2af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2AF 11328 bytes
SHA-256: e48e8abd00e67460a5403cd31f8e2f5e452ee27ced2a7e5c658d5cf38e0c2450

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