Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1e934ebb94c0a6c…

MALICIOUS

PDF

78.0 KB Created: 2021-03-29 22:03:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f183f519de98dbcb55b7c692bc898113 SHA-1: 576553cb505055937ebc1b54581c957cf0ac2aee SHA-256: d1e934ebb94c0a6c7f8f02d24f7a39d02a57b3208dd07658b6457946f27cd254
156 Risk Score

Malware Insights

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

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 0.9956

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://mezovuduw.ru/123?utm_term=b+tet+notification+2017+pdf PDF link annotation
    • https://cdn.sqhk.co/muvifisi/efsigj2/pasisude.pdfIn PDF document text
    • https://cdn.sqhk.co/jupujezaxa/G7hbxif/57979181365.pdfIn PDF document text
    • https://rirupalolidofe.weebly.com/uploads/1/3/4/6/134601765/bc8951fe48971.pdfIn PDF document text
    • https://cdn.sqhk.co/tavaxikanabu/ifSwhjz/41108445530.pdfIn PDF document text
    • https://cdn.sqhk.co/romekeka/M6Ejf5h/remitisosuruk.pdfIn PDF document text
    • https://cdn.sqhk.co/navotezive/bii1Agc/fajazefefodotapasarowa.pdfIn PDF document text
    • https://vafumavuforowa.weebly.com/uploads/1/3/4/4/134489815/6d015a357a9a0.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusemob/Cnjdbf2/international_marketing_notes.pdfIn PDF document text
    • https://wajotirege.weebly.com/uploads/1/3/5/3/135306859/xetone.pdfIn PDF document text
    • https://cdn.sqhk.co/lidupusumoj/hck6idM/pogibosupilitaru.pdfIn PDF document text
    • https://cdn.sqhk.co/tisewesir/MibgcJn/smart_charging_case_iphone_6.pdfIn PDF document text
    • https://cdn.sqhk.co/fakineduxafe/iQhiick/xixevaxitimak.pdfIn PDF document text
    • https://cdn.sqhk.co/nivunufozub/dFlXWYb/movie_material_review.pdfIn PDF document text
    • https://nefosedinipal.weebly.com/uploads/1/3/4/6/134698739/diwisorurowijojomeg.pdfIn PDF document text
    • https://cdn.sqhk.co/rumobotituda/ijUggjc/mi_calendar_latest_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/ronofumito/dXBgjhb/kanibus.pdfIn PDF document text
    • https://cdn.sqhk.co/zaletimerizo/OEtkDid/crush_drop_hints.pdfIn PDF document text
    • https://cdn.sqhk.co/wejagamewo/dhchfhg/mamusaviji.pdfIn PDF document text
    • https://cdn.sqhk.co/nexetifosam/hijKDUB/11171717969.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fikuvine/49007373128.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/17920673180.pdfIn PDF document text
    • https://s3.amazonaws.com/vosimalume/befaroritep.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/breaking_benjamin_dear_agony_song.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/sumiropupijose.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/how_do_i_make_an_appointment_to_get_my_permit.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/ipad_mini_5_specs_vs_ipad_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/how_to_unstick_badger_garbage_disposal.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C9 5296 bytes
SHA-256: f3d3fe1fc1b814e31f59e9a28bc1f1539ae20b718b66f75ec2ce9cbb8f4a00c7
font_01_sfnt_off000105f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F6 10624 bytes
SHA-256: c2d6aefc25c6ad10b65115bc416d9af972b1739bf3e694c9a6b2fe24a3b9061f

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