Malicious PDF — malware analysis report

Static analysis result for SHA-256 006858fc381835e8…

MALICIOUS

PDF

77.1 KB Created: 2021-03-20 05:14:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e8b8d108b7b0e5a01303e41659beff5c SHA-1: 1b552c7cb5547265eb3f80e9268f6d5b38e949ec SHA-256: 006858fc381835e89609bfd72db48297ea5d5b766e0d06a53f788b942a56685f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dugedepap.ru/wix?keyword=joana+guide+free PDF link annotation
    • https://cdn.sqhk.co/wifepodilojo/hiZpiiQ/hertz_rental_car_additional_driver_fee.pdfIn PDF document text
    • https://mexavabawidusa.weebly.com/uploads/1/3/4/3/134375000/3433717.pdfIn PDF document text
    • https://cdn.sqhk.co/jopubelo/gjIhbjf/pugenumaputaraxek.pdfIn PDF document text
    • https://cdn.sqhk.co/mivezifov/YgiDUtj/jiffy_lube_coupons_tempe_az.pdfIn PDF document text
    • https://cdn.sqhk.co/xenumobavun/BEgdicT/56354102040.pdfIn PDF document text
    • https://kowizonijate.weebly.com/uploads/1/3/5/9/135991151/2548412.pdfIn PDF document text
    • https://cdn.sqhk.co/napumefu/jRMRhbM/99584105083.pdfIn PDF document text
    • https://guxesawaxogego.weebly.com/uploads/1/3/4/3/134314991/664463.pdfIn PDF document text
    • https://silajawa.weebly.com/uploads/1/3/4/3/134339193/jotexufemuzoso.pdfIn PDF document text
    • https://roxilegetewus.weebly.com/uploads/1/3/4/7/134721251/aa7d31.pdfIn PDF document text
    • https://cdn.sqhk.co/wugunifikezu/hi5hdH0/bagudosexisojeditipitaka.pdfIn PDF document text
    • https://tovujitirufozi.weebly.com/uploads/1/3/4/8/134853008/9934415.pdfIn PDF document text
    • https://nedotumawu.weebly.com/uploads/1/3/4/6/134626041/535656.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/cgd5igx/94893152252.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/96e12e87-7bd6-4a39-8f17-e8461e9f0987/perukipebodova.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/bollywood_movies_in_english_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/718ebcc6-2481-4fad-adcd-0b33467fe18e/wendler_531_calculator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e732998-87f3-472d-88df-54a12f8f83e4/42903248011.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/fukolaja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d05d81b-6d6e-44ab-aad3-12767d0322ac/99159335078.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/441ff128-9dcb-4525-9532-f6ab79a07353/97308094114.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_off0000f045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF045 4852 bytes
SHA-256: 5b13844ca913a7676f33921ee8f1cf35b3f695264f8db2893b325780e46d4d43
font_01_sfnt_off000100da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100DA 11392 bytes
SHA-256: b7de89507070c950d2680054a6095dc008b2f5b8900c97db506ac192cd47595b

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