Malicious PDF — malware analysis report

Static analysis result for SHA-256 100fc314d95feaa9…

MALICIOUS

PDF

75.3 KB Created: 2021-04-01 00:22:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9341e708795f36d2c6e3f0f3e717d20c SHA-1: 1164779891353fa3935cde7ea3dcd108928d01eb SHA-256: 100fc314d95feaa9d7c75802d39acaa9a51a7ce10bf6b63dcaa0fe4e31df1852
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 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gimoguvi.ru/123?utm_term=lithium+carbonate+medication+guide PDF link annotation
    • http://finansi-7.online/politics_in_states_and_communities_15th_edition_chapter_1mpvfs.pdfIn PDF document text
    • http://tb-films.ru/dictionnaire_acadmie_franaise_5eme_editionx78gt.pdfIn PDF document text
    • https://molipexizeji.weebly.com/uploads/1/3/4/6/134693273/juzadazewusume.pdfIn PDF document text
    • https://davavenetu.weebly.com/uploads/1/3/4/5/134500413/kagitapisidux-bisalowuke-dobevu-sijigabamubufe.pdfIn PDF document text
    • https://xunowarusaki.weebly.com/uploads/1/3/4/3/134371630/5461546.pdfIn PDF document text
    • http://igcopyrightforhelps.com/movasokusanasisavavupoboz61oa1.pdfIn PDF document text
    • https://cdn.sqhk.co/lagazowasobo/jagpM5I/second_hand_clothes_stores_near_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484169/normal_60642297baa91.pdfIn PDF document text
    • http://yachtcharter.group/12658921261t09jk.pdfIn PDF document text
    • https://cdn.sqhk.co/pixefavenar/iUJihjc/pac_man_world_2_ps4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366029/normal_601368fb5f3b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381536/normal_6050b1d53f381.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375070/normal_6027a77619f5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485436/normal_60618bb25ba72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366008/normal_600dc247f40e8.pdfIn PDF document text
    • https://cdn.sqhk.co/wowobavukelo/a3vHgiS/neropasanaramefabodexexa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486772/normal_6047439d3760d.pdfIn PDF document text
    • https://sajenaviwabawi.weebly.com/uploads/1/3/4/2/134266368/fupevov.pdfIn PDF document text
    • https://cdn.sqhk.co/livukigelo/Rlhahjg/inbound_hubspot_certification_answers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xaxotatizomeno.rf.gd/39439467777.pdfIn PDF document text
    • http://kotiximuro.rf.gd/30928299856.pdfIn PDF document text
    • http://fibajufe.rf.gd/ejercicios_de_lectoescritura_para_segundo_grado_de_primaria.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_off0000eb8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB8D 5224 bytes
SHA-256: 8acb9a42a76a87d619d91038d526b8da0c872b8dca68204dc0149a3565501d29
font_01_sfnt_off0000fd29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD29 10176 bytes
SHA-256: db64093c0f8f913b74f1f4a2088227d069406433fc553bfb863e8a25b7c56413

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