Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6c4b1de156c5a1b…

MALICIOUS

PDF

75.6 KB Created: 2021-03-19 09:26:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 4bb30cea1e528c031c063a435fd08deb SHA-1: 6cd0b2ca596a5d23be20105442e022d1c6393b30 SHA-256: e6c4b1de156c5a1b87660c2a3937758c7376d7d4660d93a82ecb7ea6f1030226
186 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, suggesting a link farm or SEO manipulation tactic. One prominent URL, https://mezovuduw.ru/wix?keyword=puma+fitness+watch+manual, appears to be a lure for users searching for specific product manuals. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://mezovuduw.ru/wix?keyword=puma+fitness+watch+manual PDF link annotation
    • http://betawajapasex.22web.org/89802250117.pdfIn PDF document text
    • https://movalolutipala.weebly.com/uploads/1/3/2/6/132681002/a37b090affec8ad.pdfIn PDF document text
    • http://wewudiwiwojob.22web.org/annexure_e_1_undertaking.pdfIn PDF document text
    • https://xadigepuve.weebly.com/uploads/1/3/1/4/131454317/2894900.pdfIn PDF document text
    • http://funomixukipiv.iblogger.org/vowodujeninematosesaw.pdfIn PDF document text
    • https://kusejatakobex.weebly.com/uploads/1/3/1/4/131438299/jinugegalepukom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sanemogoxidiwus.epizy.com/how_to_tell_if_a_power_bank_is_fully_charged.pdfIn PDF document text
    • http://ravuxisopol.rf.gd/49416827439.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2080d601-26f3-480c-a592-41c84670ba89/56305963460.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1023485-607c-4662-a2f2-1ff71709cbd4/how_to_put_plantronics_in_pairing_mode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fe567e0-5aaa-49e2-8563-50c4d74dca6c/twilight_full_movie_download_in_hindi_all_part_filmywap.pdfIn PDF document text
    • http://dasabenanej.epizy.com/98641739795.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62186efd-fc62-485f-97be-de6d773d78a3/4_words_game_level_21.pdfIn PDF document text
    • http://delonewafunedi.rf.gd/aboriginal_dance_performance_perth.pdfIn PDF document text
    • http://sejanufejos.epizy.com/best_business_analytics_courses_in_india_for_working_professionals.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ba31b23-4273-414a-9712-109235b3d64b/99634728394.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbf9a993-de05-4fa2-ac3c-6393a5cfdcf5/miwokukubegeri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8d48363-d189-4ff9-ae4b-38acf168ceea/82248690143.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d68f138-1bb7-4e0a-b321-8330d0c5d1af/is_roomba_mapping_worth_it.pdfIn PDF document text
    • http://fojoxolizono.rf.gd/9685466360.pdfIn PDF document text
    • http://fajanelumaj.epizy.com/lajobaf.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE025 5120 bytes
SHA-256: ca8500e0a0b91ed81504396eadbc3ad69a995c0a6068edaf1ec757db6d587135
font_01_sfnt_off0000f181.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF181 14456 bytes
SHA-256: 202612dd17779dd7892d255dfafa881afe22a150e3e7520341fac451395c9360