Malicious PDF — malware analysis report

Static analysis result for SHA-256 a61555042f3aa193…

MALICIOUS

PDF

73.5 KB Created: 2021-03-31 06:27:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9d4999dd8e0ddbf5302461417248201f SHA-1: 16ba2d9551cb82dc4dc2bacc72a0da04e2343f55 SHA-256: a61555042f3aa1932f2b0e4668f67fa6c9ce6262c844afb367b37e1b2d6a88c0
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 0.9960

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://ponafet.ru/strik?utm_term=wing+chun+dummy+training+dvd PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366369/normal_6048a5578c8b4.pdfIn PDF document text
    • http://mediaverifiedbadge.com/dell_inspiron_one_2320_release_datep9q6a.pdfIn PDF document text
    • http://nojigopagapusu.mygamesonline.org/cardiac_cycle_file.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385028/normal_5fd7d0fb4f58a.pdfIn PDF document text
    • http://raicen.com/najinegefbezf7.pdfIn PDF document text
    • http://damewumesigalut.medianewsonline.com/bafukixapodutuvunimu.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/ghXQihY/94627743223.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423454/normal_6007fafaa0ab6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456114/normal_5ff7b0f41f75a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410976/normal_5fe6dd0b7c036.pdfIn PDF document text
    • http://xomofaki.getenjoyment.net/zevejelamemalu.pdfIn PDF document text
    • http://save50.pro/can_you_still_buy_revere_ware_pots_and_pansvnn57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407813/normal_602fa48a8ec03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480904/normal_600ab7145126a.pdfIn PDF document text
    • http://repair-kompov.ru/how_to_turn_off_security_indicator_light_nissan_altima7qwjk.pdfIn PDF document text
    • http://tumbaa.space/car_crash_simulator_game_for_pc_free_download0ix0o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369905/normal_605a1dad9c7bd.pdfIn PDF document text
    • http://pewekelexu.mygamesonline.org/43782849714.pdfIn PDF document text
    • https://cdn.sqhk.co/wamedexipun/fDNhaha/space_engineers_mods_not_showing_up_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475985/normal_6048763f225f3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1b96d2a-a7da-423b-9e0b-e84c7b53c32d/la_biblioteca_de_babel_resumen.pdfIn PDF document text
    • http://vigexosav.myartsonline.com/how_much_does_it_cost_to_copyright_a_logo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4eeddcb7-3319-48a5-83b4-a4c3a62a12bd/76730857156.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63fdb82f-8261-46d0-b390-cca7a622d8a7/70512790392.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d348b22-e95c-46b2-aa5a-1f786527297f/zowirazid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96bfb580-fdd2-423e-a58c-56dabee90745/78610965927.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_off0000dd52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD52 5316 bytes
SHA-256: 3f769c0939cb804b7182a2116414be47f4e08b2ec67de0e4292073623478471c
font_01_sfnt_off0000ef54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF54 11640 bytes
SHA-256: 30c275fc1ec04bd278f1746960741ea50b8981c0b9d4016635d15e03a49ca159

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