Malicious PDF — malware analysis report

Static analysis result for SHA-256 d047ee28569d5b76…

MALICIOUS

PDF

72.4 KB Created: 2021-03-02 11:44:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95b7e7d818c86102f7d088e30a50a9fc SHA-1: bb8e2d866772460c09c51ae62369f5b2353b2c8a SHA-256: d047ee28569d5b764a2d0fc265b77ef59afbf12b0c287f9e4b1cfc80bbd98273
126 Risk Score

Malware Insights

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

The PDF contains multiple external URIs, with one prominently featuring 'craftsman planer review' and pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially harmful content.

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://lozipotod.ru/123?utm_term=craftsman+planer+review
    • https://static.s123-cdn-static.com/uploads/4459479/normal_5fcc9e0f163f1.pdf
    • https://kupujusurigov.weebly.com/uploads/1/3/4/4/134471221/dajotuzebov.pdf
    • https://fanesorugetefex.weebly.com/uploads/1/3/1/3/131383934/ea4d13512.pdf
    • https://static.s123-cdn-static.com/uploads/4423154/normal_5fe16869cab25.pdf
    • https://static.s123-cdn-static.com/uploads/4500665/normal_5fcf3550e40ac.pdf
    • https://cdn.sqhk.co/barevirus/fhd7gdi/88874582499.pdf
    • https://cdn.sqhk.co/lojenozasila/fjjYji5/electric_demolition_jack_hammer_harbor_freight.pdf
    • https://cdn.sqhk.co/jotenitix/w2gjCgg/diy_balloon_arch_without_helium.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/norozovijalu/bodaradagamusof.pdf
    • http://jupejorix.epizy.com/pure_love_lyrics.pdf
    • https://s3.amazonaws.com/jezekemunidup/fikagalaperizozeji.pdf
    • https://s3.amazonaws.com/vatosolikijike/jomogudirawaxadizazi.pdf
    • http://rewifavad.epizy.com/debidinatefujuvalejazum.pdf
    • https://s3.amazonaws.com/tetofamuxulil/munidagiwidupu.pdf
    • http://parorusoba.rf.gd/login_template_bootstrap_asp._net_mvc.pdf
    • https://s3.amazonaws.com/lorifumofelu/arc_length_and_sector_area_homework_answers.pdf
    • https://s3.amazonaws.com/xakapudakadu/boxiv.pdf
    • http://dasanurarad.epizy.com/kirumugedigenatopub.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfa6.bin
f5a51f2333736f56a1cd57a7a91629d56806c9dd7702857e23425cf27519d2f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA6 5104 bytes
font_01_sfnt_off0000f0fd.bin
9330204d01c810e36828b81835c2beb578ebc73766afd2229ac522204bd713b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0FD 10508 bytes

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