Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7c2a9245ddb5481…

MALICIOUS

PDF

69.1 KB Created: 2021-03-28 04:54:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: f809779128a8d2f6c10d0e14dbc90f3d SHA-1: d719e1bddc29c35fc54ebf4fc0a8fefcd34dbbb6 SHA-256: f7c2a9245ddb5481c692f0391c2da4ef1817f594cce5d6eac324651926ffa26c
146 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure. 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 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://midufefew.ru/wix?keyword=tasco+game+camera+security+box PDF link annotation
    • https://puviguwa.weebly.com/uploads/1/3/0/7/130776677/82cdb3b2fa6.pdfIn PDF document text
    • https://dafizigupiteg.weebly.com/uploads/1/3/4/4/134492389/9ddda1426cc109.pdfIn PDF document text
    • http://povulofi.mywebcommunity.org/norton_anthology_of_english_literature_9th_edition_volume_a.pdfIn PDF document text
    • http://lobulezinovux.medianewsonline.com/when_was_the_fall_of_reach.pdfIn PDF document text
    • http://tixokapine.mypressonline.com/antisocial_personality_disorder.pdfIn PDF document text
    • http://septiki-rf.website/derurekavazewerogeragutdlx1y.pdfIn PDF document text
    • http://kiwenalod.medianewsonline.com/what_is_machine_learning_for_beginners.pdfIn PDF document text
    • https://fitinunajixir.weebly.com/uploads/1/3/1/6/131637477/wuravirojag.pdfIn PDF document text
    • http://jevafurevozu.mygamesonline.org/a_discovery_of_witches_season_2_episode_release_dates.pdfIn PDF document text
    • http://veselutut.mywebcommunity.org/que_establece_la_ley_de_ohm.pdfIn PDF document text
    • http://good-production16.site/39250365482u9mek.pdfIn PDF document text
    • http://dojemop.mywebcommunity.org/76708860796.pdfIn PDF document text
    • http://jotitojimo.mygamesonline.org/how_to_prove_that_iron_is_more_reactive_than_copper.pdfIn PDF document text
    • http://fapseo.ru/oxford_english_pronunciation_dictionaryq5dre.pdfIn PDF document text
    • https://kibowoje.weebly.com/uploads/1/3/0/7/130775027/1135580.pdfIn PDF document text
    • https://tizemafuniture.weebly.com/uploads/1/3/4/6/134636649/6abcccb4c3b7f.pdfIn PDF document text
    • http://smcjd.com/842962608168ioih.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/mujevubutukoxu/oracle_pl_sql_case_when_like.pdfIn PDF document text
    • http://wadatenut.rf.gd/rewardcenter._att_my_reward_agreement_fsv.pdfIn PDF document text
    • http://risesodasa.epizy.com/self_reliance_quotes_with_page_numbers.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/excel_formule_pour_arrondir_au_chiffre_suprieur.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/what_is_300_psi_air_compressor.pdfIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/wesabipigavoxarobimuboni.pdfIn PDF document text
    • http://bofogaf.rf.gd/information_systems_audit_report.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/similarities_and_differences_between_the_little_prince_book_and_movie.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_off0000cdb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDB3 5344 bytes
SHA-256: 4567d280bc5d9a7f456549f09d1e9bc597c86b01b6c6d9662f3673965356bdc2
font_01_sfnt_off0000dfd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD9 11000 bytes
SHA-256: 5d985ba9738804cfb1d66f0945e84d04c6420fdcf83797a5ee29b9dcc4fedf04