Malicious PDF — malware analysis report

Static analysis result for SHA-256 70f3dc5e71dc1fc6…

MALICIOUS

PDF

101.7 KB Created: 2021-03-21 12:31:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 752e9e9107cbd6a39a331d1623ef159d SHA-1: 922001419bd3f0b019516031609fc1ccfd6e663d SHA-256: 70f3dc5e71dc1fc6f179194e30d94ae1da633cfb23780ec1cfcbf959ec93ceaa
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable hosting and are presented as search results for academic topics. Heuristics indicate this PDF is a link farm designed to redirect users to potentially malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://gimoguvi.ru/award?keyword=aristotle+nicomachean+ethics+book+9+pdf PDF link annotation
    • http://particuliers-societegenerale.xyz/diarrhea_who_guidelines27ymh.pdfIn PDF document text
    • http://extrameets.fun/criminal_law_attorney_job_description0gg2c.pdfIn PDF document text
    • https://cdn.sqhk.co/togokitaz/pjg9Xgh/64096419674.pdfIn PDF document text
    • https://gevexivojuler.weebly.com/uploads/1/3/4/4/134444242/fasalutumivajovonogo.pdfIn PDF document text
    • https://xumizobizuzu.weebly.com/uploads/1/3/4/6/134688834/riseva.pdfIn PDF document text
    • https://cdn.sqhk.co/vilubofi/zZjc5jc/7_wonders_duel_solo_play.pdfIn PDF document text
    • https://rebomavarel.weebly.com/uploads/1/3/4/8/134883959/1080613.pdfIn PDF document text
    • http://sezejawi.mypressonline.com/60438144875.pdfIn PDF document text
    • http://lirinevewafa.mypressonline.com/11114985812.pdfIn PDF document text
    • https://cdn.sqhk.co/livulopo/ljhiajg/78289063908.pdfIn PDF document text
    • http://bostpolamos.site/sonicwall_tz_100_manualn3kng.pdfIn PDF document text
    • https://cdn.sqhk.co/ladetozuxi/kjjibgc/misuxuvoginaxubus.pdfIn PDF document text
    • https://logomuwijo.weebly.com/uploads/1/3/0/7/130738525/nodasuxidimun.pdfIn PDF document text
    • https://cdn.sqhk.co/mozigizax/2HiaSgh/sandwich_recipes_for_kids.pdfIn PDF document text
    • https://ponigeje.weebly.com/uploads/1/3/0/8/130874529/ab4e4.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/nedijowewoded/bibel_tv_mediathek.pdfIn PDF document text
    • https://s3.amazonaws.com/gagotaniwipure/gojavisusikuvatejef.pdfIn PDF document text
    • http://wupidusujimi.myartsonline.com/modelo_canvas_definicion.pdfIn PDF document text
    • http://gafodix.myartsonline.com/73878375612.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/pottu_amman_tamil_movie_video_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/taxutibiwowotidifafagifi.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_off00015336.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15336 5744 bytes
SHA-256: 17a46942d6e9d7d2d9883c849d1ccc23b002031c5d906055c8547b07c87f653f
font_01_sfnt_off00016687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16687 10328 bytes
SHA-256: f3f188af59815af47ef0741cf2831dea46283e782a452474a130a019bfa55589

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