Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c0d2d45191ae4bd…

MALICIOUS

PDF

76.8 KB Created: 2021-03-17 06:41:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 50ebe42442a29d5160381c6e2222d075 SHA-1: ec0b5eb04c990529e1b25d7a0b81843106d39f4f SHA-256: 6c0d2d45191ae4bdc45b63896820826ae01895da5520f09d0dc106f7a1e873fd
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a link farm, suggesting a phishing or SEO manipulation tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or distributing malware. Although no scripts were explicitly extracted, the PDF structure and numerous external URLs point towards an attempt to redirect users to malicious sites, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/award?keyword=cmake+tutorial+pdf PDF link annotation
    • https://cdn.sqhk.co/tofatuxurejo/L1iivWE/billie_eilish_lyrics_ocean_eyes_chords.pdfIn PDF document text
    • https://cdn.sqhk.co/xonepogafix/gt5heja/arknights_tier_list_may_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/damukowabij/fLFjazp/small_business_plan_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419630/normal_5feeb177a3a89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368493/normal_6047a283c6657.pdfIn PDF document text
    • http://termometr-medikal.site/pogulepujosuwq5979.pdfIn PDF document text
    • https://bonopabugo.weebly.com/uploads/1/3/4/5/134581776/bitejizomiruzi.pdfIn PDF document text
    • https://vigajinid.weebly.com/uploads/1/3/4/8/134889024/9737890.pdfIn PDF document text
    • https://xijiruxexewige.weebly.com/uploads/1/3/4/7/134725886/4ba396b2b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376374/normal_5fe3df96af9b6.pdfIn PDF document text
    • http://the-glow.ru/322912359226mrp0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486353/normal_5ff53887ba729.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464067/normal_604d7cb90494a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371020/normal_5fd974d871533.pdfIn PDF document text
    • http://gachihyper.xyz/77547893886v136u.pdfIn PDF document text
    • http://jewogipuwivi.medianewsonline.com/nukozumutimosevegulikez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450506/normal_5fee648509867.pdfIn PDF document text
    • http://myluckybet.xyz/las_vegas_appraisal_districtr0vkk.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/Thjgc4S/bowafepoko.pdfIn PDF document text
    • http://petrol-v-pol-price.site/70073497482g3af6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463810/normal_6019ba00212e4.pdfIn PDF document text
    • https://tukusalo.weebly.com/uploads/1/3/0/9/130969921/3133028.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366331/normal_5fe27d78da260.pdfIn PDF document text
    • https://cdn.sqhk.co/lozuzupadis/EiijYig/48622521086.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465949/normal_6048fa022eb6f.pdfIn PDF document text
    • http://nigoguno.scienceontheweb.net/harga_cartridge_printer_hp_laserjet_p1006.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE973 4976 bytes
SHA-256: f47fd17d05dfe96f06f85555f90538a78281b6f979e6f34bb77d3ad8c702b6cf
font_01_sfnt_off0000fa44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA44 12288 bytes
SHA-256: 347278e0107c69a807f68ac0c508ef3ffce3d5618f10d1c7f12ad7c9db855b5c