Malicious PDF — malware analysis report

Static analysis result for SHA-256 339f95d85bb7a225…

MALICIOUS

PDF

92.7 KB Created: 2021-03-16 06:40:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 067eb3fe881837afc2cf96f87f4f01a1 SHA-1: 53b3aa8644aacba7dd6db19e02d88f9e2894963a SHA-256: 339f95d85bb7a225e71a257a471e291e03a2bb3ef4a9b5127204ee927ae3fbec
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 0.9992

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://lozipotod.ru/strik?utm_term=how+to+connect+turtle+beach+stealth+500p+to+xbox+one PDF link annotation
    • https://fujerituzaxu.weebly.com/uploads/1/3/0/7/130775231/togifavakobax.pdfIn PDF document text
    • https://labopepiw.weebly.com/uploads/1/3/4/7/134747507/wizimen_gabazesuxira_gopim_fisubozugiru.pdfIn PDF document text
    • http://basumoxivor.sportsontheweb.net/what_is_his_name_narration_change.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415936/normal_60486c7a9a540.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411683/normal_602711f9bd4ad.pdfIn PDF document text
    • http://fazurusitu.getenjoyment.net/life_comes_from_life_latin.pdfIn PDF document text
    • http://kinemulawaw.sportsontheweb.net/model_3_long_range_vs_performance.pdfIn PDF document text
    • http://nufivuzelikonax.getenjoyment.net/feminist_literary_analysis_example.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389074/normal_5fd78ab8c9079.pdfIn PDF document text
    • https://cdn.sqhk.co/xisofofumew/ZhhBidZ/trucks_off_road_mod_apk_obb.pdfIn PDF document text
    • https://nigomisenavuluw.weebly.com/uploads/1/3/6/0/136095850/330788.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462727/normal_60176c1373ed9.pdfIn PDF document text
    • https://kevibudoja.weebly.com/uploads/1/3/0/8/130814666/2019186.pdfIn PDF document text
    • https://giweberemep.weebly.com/uploads/1/3/2/6/132682555/1327f.pdfIn PDF document text
    • https://cdn.sqhk.co/sixitigoxeto/dcXCljg/kenezo.pdfIn PDF document text
    • http://barajofa.mywebcommunity.org/dobofu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/34880260737.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/best_pilot_arc_plasma_cutter.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/sisogezelija.pdfIn PDF document text
    • http://nudagimanefej.atwebpages.com/87261867920.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/nixuwivejusaneledofabez.pdfIn PDF document text
    • http://fotizojorirepel.onlinewebshop.net/86071600337.pdfIn PDF document text
    • http://gapoxuvopa.onlinewebshop.net/what_does_the_end_of_the_handmaids_tale_mean.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_off000122e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122E3 5548 bytes
SHA-256: 3f96c5309c2fb8dbf3d2aa08335b3a4beaebe9d4c7c7461db75d5737a37b98a4
font_01_sfnt_off000135cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135CD 14580 bytes
SHA-256: 4632000485bd6e36e02daf78dee4a4734e5b4fd882a1835488329510fa030c11

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