Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f9d6f9d5876b228…

MALICIOUS

PDF

67.3 KB Created: 2021-02-02 05:03:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d84432263394436699ad683e32661bed SHA-1: fa040f637c74cc873b82417e3ce722606137fc89 SHA-256: 6f9d6f9d5876b2287502b88af7914936484674d757bfe906d572d0b79098869b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to disposable domains and link farms, suggesting a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically highlights the use of disposable hosting and UTM parameters, common in phishing campaigns. While no scripts were explicitly extracted, the presence of external URIs and the overall structure strongly suggest the document is designed to redirect users to malicious sites.

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://seumenha.ru/123?utm_term=transformers+devastation+platinum+trophy PDF link annotation
    • https://cdn.sqhk.co/mapibeze/rhigiob/application_orange_money_sur_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/vetukalujir/jhdjgie/gift_soccer_win_real_gifts_online.pdfIn PDF document text
    • https://cdn.sqhk.co/gukokefa/ih7bLgj/4_pic_1_word_3_letters_tree.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388060/normal_6004402949c77.pdfIn PDF document text
    • http://metalllift.ru/jidemr5p16.pdfIn PDF document text
    • http://kataeta.club/56708868335qhv2r.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373248/normal_5fffa558c995e.pdfIn PDF document text
    • http://zoom-omsk.ru/dudokagowufdtaas.pdfIn PDF document text
    • https://cdn.sqhk.co/ribobujir/djegjjj/negovo.pdfIn PDF document text
    • http://jumovuv.22web.org/ameristar_warranty_information.pdfIn PDF document text
    • https://cdn.sqhk.co/nomitusibop/jijbYgj/dunkleosteus_ark_taming.pdfIn PDF document text
    • https://cdn.sqhk.co/mitugejaxel/ajjtjdU/jetonebavegowafij.pdfIn PDF document text
    • https://cdn.sqhk.co/wafasojudo/YPJzKix/hearts_of_iron_4_mods_paradox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464873/normal_601185f2d6970.pdfIn PDF document text
    • http://herss.space/knife_sound_ringtone_free_download0l7s0.pdfIn PDF document text
    • https://cdn.sqhk.co/risejesob/jiAhhvJ/xubulegovidab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460070/normal_60158104dbbd9.pdfIn PDF document text
    • https://cdn.sqhk.co/rosomugimo/23girgh/79825254497.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://teveniwavabubak.rf.gd/2466640195.pdfIn PDF document text
    • http://vigevelo.rf.gd/guidelines_blood_pressure_dental_treatment.pdfIn PDF document text
    • http://tereraje.rf.gd/motion_typography_template_free.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_off0000ca8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA8E 5392 bytes
SHA-256: 53e5c4bcecf395dccaa5f403b9a009e226539525367065e857b68a49cd2d6dae
font_01_sfnt_off0000dcc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC2 10140 bytes
SHA-256: 812d0db1429f85a3ba536e212096baccde084ddb3b689c8d859b002622e8b98f

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