Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1ced316ec6d5671…

MALICIOUS

PDF

75.4 KB Created: 2021-03-10 03:56:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 8d0bcfbdceb38e854e2c72445253b530 SHA-1: 30cbd5aeb786002b5a3aaf906e921210cf384e45 SHA-256: d1ced316ec6d5671f3afdc4b433ef1ed75c6dab3f590d2ebf617296dfb7f45b6
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or trojan delivery mechanism. The document body contains a deceptive search query, and numerous embedded URLs point to disposable hosting, suggesting a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to exploit users through deceptive content and redirection.

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://xezojetit.ru/strik?utm_term=how+many+miles+will+a+2010+chevy+traverse+last PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4448992/normal_5fda6cb458f19.pdfIn PDF document text
    • https://cdn.sqhk.co/mujowofapubi/xihBehf/fiji_airways_a350_delivery.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450630/normal_5fd61ac2d3208.pdfIn PDF document text
    • https://cdn.sqhk.co/lekixubegewo/ghdgeic/wifuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446500/normal_6019a95b71bf3.pdfIn PDF document text
    • http://nigoguno.scienceontheweb.net/stages_in_the_life_cycle_of_a_fern.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495839/normal_60482678b784f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424637/normal_5fffcf632f6f8.pdfIn PDF document text
    • http://nabavawuzafurur.mygamesonline.org/48892410652.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475208/normal_6041ad6a01164.pdfIn PDF document text
    • http://ratedewu.scienceontheweb.net/is_canon_pixma_ts3122_compatible_with_chromebook.pdfIn PDF document text
    • https://cdn.sqhk.co/leguzufaju/jVWiaih/rush_ball_games_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366995/normal_6019849271fdc.pdfIn PDF document text
    • http://pl50off.info/exact_audio_copy8bgfc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464080/normal_6006e2da3137c.pdfIn PDF document text
    • http://dithetsen.xyz/bupafilubokozepatadekel5nfp6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ed7c806-031c-46b6-9dca-3171c4bb5166/lawulemititizugebuzo.pdfIn PDF document text
    • http://jozobudesurarab.onlinewebshop.net/niv_study_bible_leather.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1976d4a4-34df-44b4-836e-5fce58c98459/jesavasuwaleninotimok.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_off0000e93a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE93A 5580 bytes
SHA-256: 4bbee766dd4a54247aad9098022e2d2d8bd2db0de29346f9c9d305a508d32188
font_01_sfnt_off0000fc29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC29 10464 bytes
SHA-256: 6b92c1bf24bc932ace13442d9babf6e3f4610358025684f94b9af674614ff146

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