Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2a5da723849809b…

MALICIOUS

PDF

80.5 KB Created: 2021-03-19 17:06:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 06c50e8368ace0bcfb3e3a00bfc9e3f9 SHA-1: b041eee4b0792ea9f497d7ef9a9ad0a19736fc81 SHA-256: e2a5da723849809b9b5ba0d1c3934363214036484d51c4b332d05fd96153e018
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple links to external websites, with one prominent URL leading to a site offering cracked software. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to a phishing or malware distribution site. The presence of numerous disposable domains and link farms suggests an attempt to obscure the true malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://dugedepap.ru/wix?keyword=easy+screen+recorder+no+root+pro+cracked+apk PDF link annotation
    • http://bodegumuxizobi.22web.org/51590176560.pdfIn PDF document text
    • http://kepukarob.sportsontheweb.net/jivagokija.pdfIn PDF document text
    • http://wulixiv.sportsontheweb.net/la_la_land_2016_full_movie_online_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421366/normal_600fd00a8d287.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455370/normal_5fc8a4599b693.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471096/normal_5fdcb67848e43.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455669/normal_6006e5445a2c9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://raxobuzepel.rf.gd/9640909906.pdfIn PDF document text
    • https://be08d7d4-326a-4801-be9d-4496af17a43b.filesusr.com/ugd/d31907_10f280066e224badadb30ed1edcf2045.pdf?index=trueIn PDF document text
    • http://sewemira.atwebpages.com/mozarixesowi.pdfIn PDF document text
    • http://jokajejuti.atwebpages.com/govamajezebez.pdfIn PDF document text
    • http://jumepenitujox.atwebpages.com/organizational_structure_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c675f54-3820-4e5d-aaca-6444c097a235/does_marlow_change_in_heart_of_darkness.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb47501f-2fba-4868-9dea-3442288766ae/68505733248.pdfIn PDF document text
    • http://rerupini.epizy.com/83440944723.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03f33a96-748a-4362-9dbe-342b2ddb453d/what_intermolecular_forces_does_ch2o_have.pdfIn PDF document text
    • https://f45985d3-969e-4a4b-a16b-f92b7c881388.filesusr.com/ugd/20da2d_b845a4d4dd0b48e1b527f5662e7d4250.pdf?index=trueIn 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_off0000e57d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE57D 5160 bytes
SHA-256: d73d3d9b437e564df7860490016da5392eeee9e96e7cf382fd802bb0b1421c7e
font_01_sfnt_off0000f72a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF72A 11920 bytes
SHA-256: b64d85e5dbee4c9efc1c32f6593a17d3d0cc73d62383ad1b03cad3fe1d9c83c0
font_02_sfnt_off00011f41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F41 16092 bytes
SHA-256: 2c5f1a2e3d9f683f6a217a47aeaaae813f7d4ef732a5ff54a929695507d09140

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