Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d46f2764fd61e44…

MALICIOUS

PDF

87.8 KB Created: 2021-03-18 02:55:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f2dccf11f0eea042b3641014da3b9964 SHA-1: c91681a818d88765ffb0f84e4d2c0fda9227f274 SHA-256: 9d46f2764fd61e44cfb2f9a474a06b5286f2266c2d7385081d4c3e755fdfdea9
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with a primary focus on a link to 'fokemale.ru' which is associated with a ticket scam. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF is designed to host many links on disposable domains, further supporting a phishing or scamming intent. The ML classifier and ClamAV detection strongly indicate malicious content, likely a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://fokemale.ru/wix?keyword=tomorrowland+2020+tickets+price+in+india PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4495997/normal_601032c436775.pdfIn PDF document text
    • http://tijudozi.scienceontheweb.net/how_to_learn_math_yourself.pdfIn PDF document text
    • http://zegererevez.medianewsonline.com/72049997045.pdfIn PDF document text
    • http://xumupizaxuto.scienceontheweb.net/us_army_officer_pay_scale.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491671/normal_5ff8a0dfc760d.pdfIn PDF document text
    • https://cdn.sqhk.co/jabisopomuxo/idP9Mjc/classy_captions_for_instagram_post_for_boy.pdfIn PDF document text
    • https://cdn.sqhk.co/lufelumad/jbjbijI/wivajapadiwin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454287/normal_601a2f6e5a875.pdfIn PDF document text
    • http://lojapidabud.mypressonline.com/economic_effects_of_slavery_in_africa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482645/normal_5ff78179d9526.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/ba69feb6-aeb0-49ac-b2a1-22d6e5453de9/tunefikozuxobarurofobima.pdfIn PDF document text
    • http://novogizeboje.myartsonline.com/acute_appendicitis_pediatrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18c30fb6-68bb-473c-b042-5ab697867cd7/what_do_you_call_alcoholic_drinks.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/ridivorafifikurogulofemon.pdfIn PDF document text
    • http://wudazebej.atwebpages.com/quarters_theory_tradingview.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/74864014619.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/ditevupowok.pdfIn PDF document text
    • http://kubomefewofumim.atwebpages.com/80411874074.pdfIn PDF document text
    • http://vewawisu.onlinewebshop.net/the_standard_insurance_dental_provider_phone_number.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/adiemus_song_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b13e272e-ee0f-4442-8992-5a56329559bd/12107504664.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/dunevuvelulubu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001094a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1094A 5388 bytes
SHA-256: 983b83a1a2e95cab661e212f03c5f7dbfb81d78649d36c2cd30bf742ef833754
font_01_sfnt_off00011b85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B85 11308 bytes
SHA-256: 17d2c88165482757bec42b20b0c793921e22d76f6c4405c23f2778713221a16b
font_02_sfnt_off000141f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141F3 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378