Malicious PDF — malware analysis report

Static analysis result for SHA-256 39a9fdd1dcf9d7ce…

MALICIOUS

PDF

149.8 KB Created: 2021-05-11 15:19:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 3d5b5d88f8111ebd5886194c19d57739 SHA-1: 839128bf8c31633966cfde4206cee8de71c1ead2 SHA-256: 39a9fdd1dcf9d7ced124f5e69b294d0e9f7fafd94a09a71aa5669bfb6367af90
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an external URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though partially corrupted, suggests a lure related to business or market stalls, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=setting+up+a+market+stall+in+ireland PDF link annotation
    • http://auth02mobility.com/15730405142h1qgn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376852/normal_605da69d6228e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484126/normal_5fee9b3d3ea65.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420604/normal_5fe53d82a735d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497650/normal_6036e0663401f.pdfIn PDF document text
    • http://worldhold.online/goodnight_moon_book_coverctp79.pdfIn PDF document text
    • https://cdn.sqhk.co/pulununese/cUyhahe/pacify_her_melanie_martinez_lyrics_clean.pdfIn PDF document text
    • https://cdn.sqhk.co/rorefevobo/drgdDhi/latest_android_smartphone_under_20000.pdfIn PDF document text
    • https://cdn.sqhk.co/nujamuxeg/4gcggNf/eastern_lowland_gorilla_lifespan.pdfIn PDF document text
    • https://cdn.sqhk.co/bujomukoda/Yfjbgch/91432989960.pdfIn PDF document text
    • https://cdn.sqhk.co/fivodewile/gjMgf7W/47307745480.pdfIn PDF document text
    • http://clebohets.xyz/farming_simulator_14_mobile_guide0xfxp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378618/normal_602abd277a3d2.pdfIn PDF document text
    • https://cdn.sqhk.co/baluwofuk/jehdolU/piggy_go_rewards.pdfIn PDF document text
    • http://hocostyle.ru/is_my_netgear_router_nbn_compatiblexchvl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gitipelut/companion_planting_guide_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/53869482709.pdfIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/neguvowadumuje.pdfIn PDF document text
    • https://s3.amazonaws.com/pekatikisuruki/por_que_se_bautizan_los_nios_pequeos.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/26625773358.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/gozifukibifunikakejamip.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00020355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20355 5216 bytes
SHA-256: 953a3d780c407e2e61b8258e9219fafc7336a0b6de62fafd3f64301e191e5734
font_01_sfnt_off000214f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x214F2 11444 bytes
SHA-256: c7e5892c9be424491b9a44164ce7d962c0ca0468625e942cd52e065f37e65b02
font_02_sfnt_off00023b93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23B93 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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