Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d948bb802aaf35e…

MALICIOUS

PDF

74.5 KB Created: 2021-03-30 08:27:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 63d449a8302053d319a4e52ccae99d43 SHA-1: b12520aaae979bf82e308aeb5f5d56293a191e50 SHA-256: 3d948bb802aaf35eecfb5cbc1b28eb25138b0cf783992ad13f2a36b7174f459f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9992

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/strik?utm_term=take+me+there+chords+rascal+flatts PDF link annotation
    • http://nevinidonet.mywebcommunity.org/simplification_of_algebraic_expressions_worksheet.pdfIn PDF document text
    • http://worozoxiw.sportsontheweb.net/at_lp120xusb_bt.pdfIn PDF document text
    • http://tamakar.xyz/bekudobezudigamovari60mhy.pdfIn PDF document text
    • http://rowowesofazov.medianewsonline.com/wemufogupemifikazevew.pdfIn PDF document text
    • http://itdiscounts.pro/razer_blackwidow_stealth_edition_expert_mechanical_gaming_keyboardu3fsy.pdfIn PDF document text
    • http://cabinetsly.xyz/cursos_de_guitarra_electrica_gratis_para_descargarz18am.pdfIn PDF document text
    • http://malanefire.sportsontheweb.net/59610701755.pdfIn PDF document text
    • http://majikok.mygamesonline.org/60042632479.pdfIn PDF document text
    • http://xuwuvewisin.mypressonline.com/pivezema.pdfIn PDF document text
    • http://vas-rem.ru/xoxuzexibazb5x8.pdfIn PDF document text
    • https://lisogawe.weebly.com/uploads/1/3/5/3/135312855/3633559.pdfIn PDF document text
    • https://telazeraba.weebly.com/uploads/1/3/4/7/134771299/2925296.pdfIn PDF document text
    • https://mupililoxer.weebly.com/uploads/1/3/5/3/135302313/02c30f.pdfIn PDF document text
    • https://senoxifogixuj.weebly.com/uploads/1/3/4/7/134769413/wubenez-nerilokuduzida-tigarodet-dimokaperijif.pdfIn PDF document text
    • http://udilische.club/wanapevemomisajibemuvqwcc1.pdfIn PDF document text
    • http://nomokesus.sportsontheweb.net/bible_stories_with_pictures_for_toddlers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xalixonawi.atwebpages.com/41917831564.pdfIn PDF document text
    • http://dotopaku.atwebpages.com/bodybuilding_diet_meal_plan.pdfIn PDF document text
    • http://pupagerirawax.myartsonline.com/ruzoxebijosunetukoke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f95334d5-9b5e-4ba4-8a72-550511e492f4/gexiwofe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3449dcc-0a25-491a-9f96-370f03e3a550/wapegitati.pdfIn PDF document text
    • http://lafagelupuf.myartsonline.com/second_law_of_thermodynamics_in_chemistry.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f96840b6-9746-4b39-8db5-5a90042c02ec/dilokowirusifozoz.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_off0000e662.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE662 5276 bytes
SHA-256: e6e79de3584d36ff79f601fb0293da3b19c58b4d27b34cc2161026b624688d54
font_01_sfnt_off0000f828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF828 10488 bytes
SHA-256: 7d09f19657a15330f70b9c23ce75d6dc3224c30841f96a2f3898b4ff2fc3a898

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