Malicious PDF — malware analysis report

Static analysis result for SHA-256 a838aa54bc390031…

MALICIOUS

PDF

64.4 KB Created: 2021-02-27 06:57:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4a7c66be8e921761c5ac167865fb3aa8 SHA-1: 7637ed78992e70feff623de4370ae1be70a3cc8e SHA-256: a838aa54bc3900319d4e25c661c7d2f58be983b7628c4e02e58fab4909efd05e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wix?keyword=qep+manual+tile+cutter+parts PDF link annotation
    • https://cdn.sqhk.co/reriwoduriju/f0ZkD3l/philadelphia_flyers_stanley_cup_appearances.pdfIn PDF document text
    • https://cdn.sqhk.co/wogefosa/xUha8gh/conspiracy_charges_in_ny_jail_time.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464524/normal_60190240e85ff.pdfIn PDF document text
    • https://cdn.sqhk.co/gadewekunel/hcOghii/72723680040.pdfIn PDF document text
    • http://2220202.ru/csi_las_vegas_season_5_episode_guideqoetb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426423/normal_602e6a882fd04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478923/normal_6033909298061.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453885/normal_601e124985a3e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370740/normal_6007de8e4574d.pdfIn PDF document text
    • https://cdn.sqhk.co/daxerarugak/bhaOJpb/praise_and_worship_songs_lyrics.pdfIn PDF document text
    • http://leftoutclub.com/turotipozamigonesosevopzhq2f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402718/normal_5fc9615b87ffb.pdfIn PDF document text
    • http://jelenus.iblogger.org/ludimojidabutugek.pdfIn PDF document text
    • http://tk-time.site/gebarebpq2ij.pdfIn PDF document text
    • http://vezokikawelin.iblogger.org/radio_shack_portable_power_bank_owners_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409238/normal_5fcc6f5b29e1c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://risopufegutala.rf.gd/xotanedax.pdfIn PDF document text
    • http://pavulavusutiki.rf.gd/31312071678.pdfIn PDF document text
    • http://noxikemudenuma.epizy.com/childbirth_delivery_videos_free_mp4.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_off0000c22f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC22F 5140 bytes
SHA-256: fd40585d82bce056b1c2bd9baa3b8c821ca5facd86e51e0cb04ad88a29f7e0b9
font_01_sfnt_off0000d38a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD38A 9768 bytes
SHA-256: 9dad61c6b16ff7a0191f9e48ee9e7f59d2fcc576f19b5d6aee00926f083bf595