Malicious PDF — malware analysis report

Static analysis result for SHA-256 afee227f968e18a5…

MALICIOUS

PDF

80.1 KB Created: 2021-02-14 20:48:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: a45014bd19acfa6620c7f60eafe8533a SHA-1: b0dc4ff60dce49f8f8a2be95c55c6b0418b003f3 SHA-256: afee227f968e18a5fcfbabd818581da47a007cd009e98580048c0a1f7b7fb6cf
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains and link farms, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content, likely for credential harvesting or further payload delivery.

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://druttle.ru/wix?keyword=baby+g+watch+manual+5001 PDF link annotation
    • https://cdn.sqhk.co/kitujesijak/ggfhibL/94372361973.pdfIn PDF document text
    • https://parafobosa.weebly.com/uploads/1/3/1/8/131857791/guredekanuvivur.pdfIn PDF document text
    • https://cdn.sqhk.co/nesadatifu/ebhiZgj/vutezesaku.pdfIn PDF document text
    • https://cdn.sqhk.co/lesasafo/dmhjRRx/34306435551.pdfIn PDF document text
    • https://cdn.sqhk.co/surikuzezun/Ygdggg4/sijotuxin.pdfIn PDF document text
    • https://rasofenetiko.weebly.com/uploads/1/3/4/8/134862321/dajuporumujumuk-ligore.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482027/normal_5fd84c3359ef7.pdfIn PDF document text
    • https://gizomedapirev.weebly.com/uploads/1/3/1/4/131454265/9219473.pdfIn PDF document text
    • https://jelonuzekuxenu.weebly.com/uploads/1/3/2/8/132814084/2664960.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388626/normal_602166892d41a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471692/normal_601f759332b96.pdfIn PDF document text
    • https://tusejefil.weebly.com/uploads/1/3/4/3/134320171/deruverinitosijiwi.pdfIn PDF document text
    • https://mavitebe.weebly.com/uploads/1/3/1/1/131163983/xugokitasiwoxitokev.pdfIn PDF document text
    • https://cdn.sqhk.co/nuwuzasemifo/khvCbih/the_bounce_back_movie_free_download.pdfIn PDF document text
    • https://mibubibot.weebly.com/uploads/1/3/1/8/131871690/kemezogosugoki.pdfIn PDF document text
    • https://cdn.sqhk.co/nokotadi/KqIQhfr/32604044348.pdfIn PDF document text
    • https://cdn.sqhk.co/savageven/gfq1V1p/dovewamiwitajubufotadog.pdfIn PDF document text
    • https://xitarowax.weebly.com/uploads/1/3/2/6/132681505/7116376.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/besiege_skins_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/24410706456.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fcdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCDF 5640 bytes
SHA-256: 229e174b337fedd5b07a38ff88182fc4528df042b4a97db6a7055765a064a7a0
font_01_sfnt_off00011018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11018 10332 bytes
SHA-256: 7adc31d544902b10b224fdd6a120bf00814d2e95850cbdbde5aa0720d33a375b

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