Malicious PDF — malware analysis report

Static analysis result for SHA-256 56989a206bcaa261…

MALICIOUS

PDF

72.6 KB Created: 2021-02-28 19:53:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 22b472fcc71710d99678e3d9910ae938 SHA-1: 8dbbec04d7a75d0aee02dba682700256ee362e1e SHA-256: 56989a206bcaa261a3f144d49930b66f1fc01bfad3c94c212e3b8c4c1bb895ad
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of a phishing or link-farming campaign. It contains numerous embedded URLs pointing to disposable hosting, suggesting an attempt to redirect users to malicious sites under the guise of providing information. No scripts were extracted, but the PDF structure and URL distribution strongly indicate a phishing or content-luring attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/award?keyword=quadrafire+pellet+stove+insert+parts PDF link annotation
    • https://mokowevabib.weebly.com/uploads/1/3/0/7/130739664/2233962.pdfIn PDF document text
    • http://kmikaerfs.ru/dlink_dir_601_modem78prd.pdfIn PDF document text
    • http://cccckkkkkdd.space/2_piece_puzzle_templaten747z.pdfIn PDF document text
    • http://tulomodev.getenjoyment.net/marantz_sr5008_remote.pdfIn PDF document text
    • https://dojebuxepoviguf.weebly.com/uploads/1/3/1/4/131407435/e45d4fd61f36.pdfIn PDF document text
    • https://tidemipevu.weebly.com/uploads/1/3/0/7/130740592/kopelirutiwazuwar.pdfIn PDF document text
    • https://nodajalij.weebly.com/uploads/1/3/5/9/135990600/a10638fd.pdfIn PDF document text
    • http://steelsho3.club/arcade1up_pac_man_countercade_retro_arcade_gamebvdk6.pdfIn PDF document text
    • http://fosipuzo.mypressonline.com/zifafijijuju.pdfIn PDF document text
    • http://luchdobro.site/how_much_cost_to_fix_air_conditioner_in_cark2gk4.pdfIn PDF document text
    • http://cupe1.ru/what_is_meaning_of_reaction_kinetics8whpq.pdfIn PDF document text
    • http://hookup666.site/25492911617al44n.pdfIn PDF document text
    • http://raifaisentgo.online/android_radio_app_head_unitsg9n4.pdfIn PDF document text
    • http://itfamily.info/20620114180j08ox.pdfIn PDF document text
    • http://natorg.fun/radituwawivagenoxox9u9j5.pdfIn PDF document text
    • http://getporte.xyz/47094397365fy8s.pdfIn PDF document text
    • http://nafarami.medianewsonline.com/77411297690.pdfIn PDF document text
    • http://delaem-sami.online/what_are_the_functions_of_law_in_societyzytuv.pdfIn PDF document text
    • http://xsale.trade/league_of_guessing7xhq0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000df8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF8D 5156 bytes
SHA-256: bd30cde61c32cd2ee8f70496af1e32d7120eed46d906aa55415828285064b300
font_01_sfnt_off0000f12b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF12B 10564 bytes
SHA-256: c619488c343ebe458b586996260575719b56ba901c5c3e2194a6bafefbb8569b

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