Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cdd169c26edad11…

MALICIOUS

PDF

77.9 KB Created: 2021-03-19 19:14:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0f610c689b204caace0a33879eda5000 SHA-1: 93f522d939d5c3bb0d021a0fd2c44c22cf9fe959 SHA-256: 2cdd169c26edad11c57dc6827a4774bab326711b81dd66ebae210693d4c5add5
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://zajinet.ru/wix?keyword=airlines+manager+cheats PDF link annotation
    • https://xoxoxiwozolem.weebly.com/uploads/1/3/0/7/130739626/vatuwal-rakatabixizazir-migizatugigaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422627/normal_6032ced4d6cf2.pdfIn PDF document text
    • http://homiak.fun/63454560710zm29w.pdfIn PDF document text
    • http://teniran.22web.org/japiw.pdfIn PDF document text
    • https://rebumazezip.weebly.com/uploads/1/3/4/8/134860465/7d2e293c8f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449984/normal_60419f76201d7.pdfIn PDF document text
    • https://wijugola.weebly.com/uploads/1/3/2/3/132303023/22402f8d.pdfIn PDF document text
    • https://dagepafu.weebly.com/uploads/1/3/2/7/132740813/xodasefusex-pewasizodu-fakosakofevu-dezesiwewiw.pdfIn PDF document text
    • https://bekariniwoxisit.weebly.com/uploads/1/3/2/7/132710774/janilazakegavo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477367/normal_60376246a7c70.pdfIn PDF document text
    • http://finansi-7.online/onkyo_tx-nr525_manualq9a7s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500201/normal_5fd236ef416c7.pdfIn PDF document text
    • http://kprovk.xyz/most_common_chinese_male_names2bnh.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/6a10d073-334a-43cb-8bb3-b504aa21a23e/what_are_the_software_development_life_cycle_sdlc_phases.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/55857116209.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f3c625a-17f5-4236-b597-0715f873e3d4/honda_lawn_mower_parts_air_filter.pdfIn PDF document text
    • http://dojagosixotebut.rf.gd/70824007642.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e62fe84-39d3-4041-98f1-0010bd251353/66132833056.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/meponoxuweb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7ec9a56-c267-4e7c-ba79-35781b3b2732/58831683273.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_off0000f3d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D5 5204 bytes
SHA-256: 7dc6d5a997ff09f8f39d2d70723f9156e618e798bb12fb0a2af6ff1972773928
font_01_sfnt_off00010556.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10556 10808 bytes
SHA-256: c4948ed3b22ba982d77295816ff447d69ed36881254824ef10249585ea17e21c

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