Malicious PDF — malware analysis report

Static analysis result for SHA-256 82bb2bfa68b23ca6…

MALICIOUS

PDF

81.8 KB Created: 2021-03-24 19:03:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 31ab48ac5a4ff911cc74ddb2ae0f7780 SHA-1: 70f20c8b0ee9c1cec16351d4e16be75772848bb0 SHA-256: 82bb2bfa68b23ca63922817104177d06693c282a953a0286c60e86fe767f567e
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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dafemum.ru/123?utm_term=ummy+video+er+for+android+phone PDF link annotation
    • https://sowotelimavo.weebly.com/uploads/1/3/4/0/134000290/4520592.pdfIn PDF document text
    • http://esmoney.site/philosophy_of_time_travel_onliney5hec.pdfIn PDF document text
    • http://perfectiona.online/where_is_the_fuel_filter_on_a_poulan_chainsawc3ud8.pdfIn PDF document text
    • http://scandisvet.ru/chess_rush_guide_frjoex1.pdfIn PDF document text
    • https://cdn.sqhk.co/livukigelo/hifheih/nulavi.pdfIn PDF document text
    • https://bimozasobo.weebly.com/uploads/1/3/1/3/131398313/momoko-mozazupejome.pdfIn PDF document text
    • http://fotubobuwenapu.scienceontheweb.net/88681710107.pdfIn PDF document text
    • http://vnds-v.website/advanced_strength_training_program8bl3q.pdfIn PDF document text
    • https://zurukonovode.weebly.com/uploads/1/3/1/3/131379219/9084695.pdfIn PDF document text
    • https://cdn.sqhk.co/batumozi/AghVfhg/jowawudi.pdfIn PDF document text
    • https://ganusanawopat.weebly.com/uploads/1/3/4/4/134488834/jadej_lilip.pdfIn PDF document text
    • https://cdn.sqhk.co/savujegu/jbOghii/8_ball_pool_download_apk_latest_version.pdfIn PDF document text
    • https://cdn.sqhk.co/tufuboloruj/YIhigh5/fosufagisuxewulo.pdfIn PDF document text
    • http://juvovagesubo.mywebcommunity.org/rameri.pdfIn PDF document text
    • http://prosucre.pro/diwedxqt86.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusemob/CeW8Yie/rimidozilitimonofitiga.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/4f5074bf-1c30-405e-8860-3f076044906c/68497849104.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86784122-e6c3-4f97-bcfc-f490e9cdc527/kirby_vacuum_cleaners_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e82cde5e-fb14-4a1f-bca4-996832cf2fb6/jemaponufunu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECEE 5224 bytes
SHA-256: b60e9fe136d045f23d9c9b9e3f367d742cba0392161a84887c76aca7e199caf4
font_01_sfnt_off0000fe9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE9D 11016 bytes
SHA-256: 3763f73d4b00b1e5b5a22edaf17345533758eb4d743c4c3a9397949d43230a64
font_02_sfnt_off00012455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12455 16076 bytes
SHA-256: 38fb95279055b2b92fd625b72a29e6904e371575b2130ed7894d4e2584a52df3

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