Malicious PDF — malware analysis report

Static analysis result for SHA-256 df0830f0f9078fef…

MALICIOUS

PDF

88.9 KB Created: 2021-03-06 23:51:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9f503ca2ff7703959120e2d372a71986 SHA-1: e3e93d2b00ee1af9282d54e17cd9c76df1c02317 SHA-256: df0830f0f9078fef9661638d055142b48652ea68679116f80bafc2a6a3a6c251
126 Risk Score

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 URIs, with at least one pointing to a domain associated with link farming and disposable hosting, suggesting a phishing or malware distribution scheme. The PDF's structure and embedded content are consistent with attempts to redirect users to external, potentially harmful, websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://mezovuduw.ru/wix?keyword=blood+in+blood+out+tree PDF link annotation
    • https://wonakusoxenim.weebly.com/uploads/1/3/5/3/135340368/jokin-korul-diludijitemopog-nipobo.pdfIn PDF document text
    • https://cdn.sqhk.co/kopakezoxek/hg7bfhd/jobmania_eternal_dungeon_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/kufejagefep/Oidgchj/double_dragon_6832_bardstown_rd_louisville_ky_40291.pdfIn PDF document text
    • https://penukigoguni.weebly.com/uploads/1/3/1/6/131606127/9235194.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454668/normal_5fe23f9c0ed3a.pdfIn PDF document text
    • https://roguraluvi.weebly.com/uploads/1/3/0/7/130776180/aeefa9.pdfIn PDF document text
    • https://kazigujexumakul.weebly.com/uploads/1/3/4/3/134320364/vesipu.pdfIn PDF document text
    • https://cdn.sqhk.co/minederepa/jcQNQIb/bingo_live_75_online.pdfIn PDF document text
    • https://cdn.sqhk.co/sogefuluf/xzAgf4T/2020_meme_soundboard.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423728/normal_5fd99f6dd0cfb.pdfIn PDF document text
    • https://kegegofelev.weebly.com/uploads/1/3/2/6/132681159/31a2167bba8.pdfIn PDF document text
    • https://popetufuwude.weebly.com/uploads/1/3/1/4/131483025/2a9e74b35.pdfIn PDF document text
    • https://tetoxoji.weebly.com/uploads/1/3/0/9/130969306/bepawafagebe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448985/normal_5fefedb0ae397.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/cc6a0327-4980-469f-864d-e7e6e16805b5/18849427839.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/abrao_forte_hungria.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/82245318529.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5de27c67-799f-437a-8d06-ed63a4524745/mp3xd_musica_gratis_para_escuchar_y_descargar_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/rang_barse_bheege_chunarwali_song_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/channel_7_tv_guide_mackay.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/alcohol_use_disorder_dsm_5_criteria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99b1b94f-1a94-48ab-8704-e9c7176066fa/3d_maximum_principal_stress_formula.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_off00011ffc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FFC 4620 bytes
SHA-256: 14fa249b0cc41682a96af30a8742790ae9ca267c226e0a1372650f27b335a72d
font_01_sfnt_off00012fba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FBA 11944 bytes
SHA-256: 2fba0fc3445c26ecce39d0afb373adfccaee1191cd866ddcde5ab3b7a49a9598

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