Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a2386c0fec00a9a…

MALICIOUS

PDF

97.7 KB Created: 2021-05-13 18:55:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: ebec6b0a32a471b79ba50c182f9045cb SHA-1: 46da90e3ff0239ff72544e0bdee8d17f2f2681da SHA-256: 7a2386c0fec00a9ad34fbf530322bab152dba16855bf8aff856a57449a4fb328
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. One critical heuristic indicates a mass of external PDF links, with the first URL pointing to a potentially malicious PDF. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://botokaw.ru/strik?utm_term=what+is+environmental+corporate+social+responsibility PDF link annotation
    • https://cdn.sqhk.co/fewukise/FmYghGu/playmobil_ghostbusters_2021.pdfIn PDF document text
    • http://shtangye.xyz/rejajeteviwuvewajajalupk5wqe.pdfIn PDF document text
    • https://mazerobuwi.weebly.com/uploads/1/3/1/3/131398334/jebak_rupasaretun_godaw.pdfIn PDF document text
    • https://cdn.sqhk.co/kakapoxavu/jhijjd9/gewapuxifomixagufifivozu.pdfIn PDF document text
    • http://discount50it.pro/what_book_comes_after_flowers_in_the_attic3v5pb.pdfIn PDF document text
    • http://operationhomeplate.com/technivorm_moccamaster_kbt_741_vs_bonavita5jw1k.pdfIn PDF document text
    • https://cdn.sqhk.co/nivabetaz/iepUEja/13959888724.pdfIn PDF document text
    • https://cdn.sqhk.co/sifajoxojif/ghdtFss/78558504006.pdfIn PDF document text
    • https://cdn.sqhk.co/fufitefan/iiUhjSY/setoka.pdfIn PDF document text
    • http://safetymirrors.xyz/27088846711nomx9.pdfIn PDF document text
    • https://cdn.sqhk.co/tedalome/himkJgg/ledenudes.pdfIn PDF document text
    • https://cdn.sqhk.co/pivugituxi/ifQia11/kudavazi.pdfIn PDF document text
    • https://cdn.sqhk.co/tedavevata/jfgdGii/brain_surfing_2_level_77.pdfIn PDF document text
    • https://cdn.sqhk.co/xezafube/cPjjDTJ/download_movie_now_you_see_me_1.pdfIn PDF document text
    • http://chempion.coffee/crosley_director_cd_recorder_with_cassette_and_record_player_cr2405cjh0v8.pdfIn PDF document text
    • https://kesadoxiluxar.weebly.com/uploads/1/3/5/9/135974677/nitepuxukukad.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://cee4a208-09ac-40e0-983f-4c2cc776acbe.filesusr.com/ugd/5ed537_17a23a1afe8b449e9d06c3ab4e88961b.pdf?index=trueIn PDF document text
    • https://7ed754b6-a209-4558-9281-0032c7ee8ade.filesusr.com/ugd/4329d7_b8d38b96e9604ae2a616fb2357ca88f8.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_off000132c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132C9 5276 bytes
SHA-256: 43609e5756d60a2eab34df31c53cd774381bdafbb9cb76c65d5e0249ddb6581c
font_01_sfnt_off0001448d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1448D 11344 bytes
SHA-256: b74c19326b070f484db101234b16fd30698d14ab188db5fab8361bfee83fcbc0
font_02_sfnt_off00016b52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16B52 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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