Malicious PDF — malware analysis report

Static analysis result for SHA-256 08aa395700ba4f91…

MALICIOUS

PDF

84.3 KB Created: 2021-03-19 10:13:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: dbc3ed0b2527bdee108692c2b24d185f SHA-1: 15ac173ca7dd38b7a852ec241dd69c20fe5f2678 SHA-256: 08aa395700ba4f915c8b5fd9eba1ecc73161a8c9a0ba9a238e5278a76282f9f1
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 0.9997

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://xezojetit.ru/wix?keyword=story+of+barbarian+king+in+clash+of+clans PDF link annotation
    • https://wewivipumi.weebly.com/uploads/1/3/0/7/130775870/jajudetokuwusu.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/jvMitii/37647405572.pdfIn PDF document text
    • https://fawofasoz.weebly.com/uploads/1/3/1/4/131454040/5183164.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/catechism_of_catholic_church.pdfIn PDF document text
    • https://cdn.sqhk.co/dofofigeniso/jdgi9Da/79215154772.pdfIn PDF document text
    • https://cdn.sqhk.co/vofemolat/vhig6ge/sniper_ghost_warrior_contracts_xbox_one_game.pdfIn PDF document text
    • http://zuxekagapefe.mygamesonline.org/zolomaxal.pdfIn PDF document text
    • https://cdn.sqhk.co/kagelemovo/1Nt3Yhd/sowuxijup.pdfIn PDF document text
    • https://jiwozipepogi.weebly.com/uploads/1/3/4/4/134462700/worezelizelopav.pdfIn PDF document text
    • https://cdn.sqhk.co/zebimapajod/ahcYggJ/how_to_be_a_certified_teacher_in_texas.pdfIn PDF document text
    • http://ruwufuwetoj.mygamesonline.org/is_go_ask_alice_based_on_a_true_story.pdfIn PDF document text
    • https://guxovixig.weebly.com/uploads/1/3/5/3/135317997/bewowitulokugan.pdfIn PDF document text
    • https://cdn.sqhk.co/kixarozikej/heKjefI/44858362028.pdfIn PDF document text
    • https://cdn.sqhk.co/wofikubid/hjjcgfu/matinenoxekikiwametit.pdfIn PDF document text
    • https://sofusetagiwubok.weebly.com/uploads/1/3/4/3/134320735/0dd0c813.pdfIn PDF document text
    • https://vakilelem.weebly.com/uploads/1/3/1/3/131379598/kifiba.pdfIn PDF document text
    • https://buxufuniwa.weebly.com/uploads/1/3/4/7/134717035/2800695.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/74afd0f8-ea0b-43ab-9dbf-7102e5ebe71a/29914151734.pdfIn PDF document text
    • http://nimanexobubibub.onlinewebshop.net/96472208271.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb5497b8-682e-4b89-b001-d0b1be09ed5b/faxirosawa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4e57b46-9d7a-4920-ae86-200a322931fb/mixed_strategy_nash_equilibrium_definition.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_off00010cfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CFD 5552 bytes
SHA-256: aea5e06c629cf52455a84a369d04873170766fec90334ff519f47b22ccadb849
font_01_sfnt_off00011fe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FE6 10756 bytes
SHA-256: 3312656cc4e03105d94c33c3c40b1400cb71fca9eaf7f77f8ded741ca55a0ef6

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