Malicious PDF — malware analysis report

Static analysis result for SHA-256 34116f38ca61ff2e…

MALICIOUS

PDF

77.9 KB Created: 2021-03-17 16:44:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ff8d1866e6d9c8aa37dca359ba75f6e8 SHA-1: a47c0471d28d11adb90c49ca843eb1c25c72e1bf SHA-256: 34116f38ca61ff2efefceffc1b662db303f984b391e09d746aeaaecfc803b254
126 Risk Score

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 0.9995

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://seumenha.ru/strik?utm_term=the+coldest+place+in+the+world+russia PDF link annotation
    • http://nuwetiveguvo.mypressonline.com/19313334292.pdfIn PDF document text
    • https://cdn.sqhk.co/sabepakofo/jjix04R/rasibuzejupofakepa.pdfIn PDF document text
    • http://davupopebuwiser.sportsontheweb.net/nutrition_for_dummies_book.pdfIn PDF document text
    • https://xokekujederal.weebly.com/uploads/1/3/0/9/130969763/9fe01aaba3ebf.pdfIn PDF document text
    • https://kiruxujekan.weebly.com/uploads/1/3/2/7/132740547/wuxexaxag_vebiribakaloxi_negat.pdfIn PDF document text
    • http://miwasigal.mywebcommunity.org/professional_development_plan_sample_for_nurses.pdfIn PDF document text
    • https://cdn.sqhk.co/jizuxadif/w1hfzgg/citizen_romeo_and_juliet.pdfIn PDF document text
    • http://bomaduworofa.medianewsonline.com/cambridge_igcse_modern_world_history.pdfIn PDF document text
    • https://cdn.sqhk.co/wekaradukuve/jiNudcI/the_sims_mobile_mod_apk_and_obb.pdfIn PDF document text
    • http://roxelejabojafe.scienceontheweb.net/activity_diagram_in_ooad.pdfIn PDF document text
    • http://wupidubame.mywebcommunity.org/cadastre_dfinition.pdfIn PDF document text
    • https://pibefabetanob.weebly.com/uploads/1/3/4/3/134376782/gajewefikepilu.pdfIn PDF document text
    • http://tinesemexogo.mygamesonline.org/71165683947.pdfIn PDF document text
    • https://cdn.sqhk.co/votexeruwiti/jhawigd/free_kmspico_for_ms_office_2016.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rawuwad.epizy.com/chrome_web_push_notifications_on_android.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/lose_yourself_instrumental.pdfIn PDF document text
    • http://ziwebizivag.epizy.com/blattform_ahorn_arten.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/dinupuriturov.pdfIn PDF document text
    • https://s3.amazonaws.com/wujanozo/xakitedafinut.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/22634878080.pdfIn PDF document text
    • http://renedutej.rf.gd/29394961932.pdfIn PDF document text
    • http://vasugam.rf.gd/5121936301.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_off0000f48f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF48F 5200 bytes
SHA-256: 125be7f8ab35fb5a93230a987ae5f0a89c5cbcd637f01dfa0854a07a5239940c
font_01_sfnt_off0001064b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1064B 10532 bytes
SHA-256: 01511c97612578b638e871feec1f242ef3d1d22db8fbd5f2c900d513ee621a11

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