Malicious PDF — malware analysis report

Static analysis result for SHA-256 02e5bed7044565bc…

MALICIOUS

PDF

73.0 KB Created: 2021-03-23 22:50:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 308182c41184c3b229d134cf36bcdef4 SHA-1: b85e62c506cb6606f40765b65b0410644d590d5f SHA-256: 02e5bed7044565bc7be3a436b4b82d29d8265cae759ad28bde2db3c5939ad303
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://vilenefex.ru/wix?keyword=philips+xxl+air+fryer+instruction+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421335/normal_5fedf1f23e41b.pdfIn PDF document text
    • https://jekosupoma.weebly.com/uploads/1/3/1/6/131637113/mosus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422367/normal_5fea44da31811.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479932/normal_6005ae10e7ceb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416792/normal_5ff8b67e43184.pdfIn PDF document text
    • https://dezuvamugofa.weebly.com/uploads/1/3/4/1/134131805/52e7731927.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474722/normal_602d5c16e6652.pdfIn PDF document text
    • https://vevumugenewasu.weebly.com/uploads/1/3/0/7/130776279/6789309.pdfIn PDF document text
    • https://cdn.sqhk.co/dokukavifig/I7ihjdr/bet9ja_old_mobile_coupon_check_ristechy.pdfIn PDF document text
    • https://juviroxekeko.weebly.com/uploads/1/3/5/3/135399696/nofixe.pdfIn PDF document text
    • https://cdn.sqhk.co/fajaleniwa/1t2ziff/chorus_vocal_music_definition.pdfIn PDF document text
    • https://xegugunozom.weebly.com/uploads/1/3/1/4/131482992/repujovapofejedil.pdfIn PDF document text
    • https://cdn.sqhk.co/rivogigaweb/hMuuiic/30612719209.pdfIn PDF document text
    • https://patoduwewoz.weebly.com/uploads/1/3/1/4/131483118/173201.pdfIn PDF document text
    • https://pamigewome.weebly.com/uploads/1/3/4/6/134631685/pokidomolofu-zoviwupokosigu-maxusisatiwixer-lajuzukuku.pdfIn PDF document text
    • https://dojebuxepoviguf.weebly.com/uploads/1/3/1/4/131407435/lilevabesirepub-jovuzovafurufo.pdfIn PDF document text
    • https://cdn.sqhk.co/pemejurove/RDja0jh/math_vs_zombies_games_online_free.pdfIn PDF document text
    • https://cdn.sqhk.co/porosobof/ieGhjjc/oncenter_war_memorial_arena_seating.pdfIn PDF document text
    • https://pigiwikabulate.weebly.com/uploads/1/3/1/8/131856715/3bcda3d7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e86c6366-0652-46cb-9e1f-5633a133dba9.filesusr.com/ugd/510a18_c4a1d5cc105947e49681485c139e462b.pdf?index=trueIn PDF document text
    • https://113c517c-d7b0-4b36-99d7-6722bcb7ef36.filesusr.com/ugd/8e66a5_b2016200bb8e4dbd91ccedd222b2d410.pdf?index=trueIn PDF document text
    • https://36fde204-cda4-4268-899b-58717f9005d0.filesusr.com/ugd/b13063_a422796138164ee88c3c4fcf0ef97855.pdf?index=trueIn PDF document text
    • https://2c8134a4-d865-4da1-8961-c755d7242105.filesusr.com/ugd/6dcf04_589919f78b1043fb8a5091789f026158.pdf?index=trueIn PDF document text
    • https://30621b86-6952-4b41-80af-4d24d830bc7c.filesusr.com/ugd/122077_0c7b9055f3324d8aa9a3e9b0acc78ba5.pdf?index=trueIn PDF document text
    • https://36071b1a-d853-4ad1-bccf-0ed894d94038.filesusr.com/ugd/906e9f_fd6147befd534cc087c4dd95c73ccca2.pdf?index=trueIn PDF document text
    • https://599b09cd-7b6a-4758-94a3-08a08d316165.filesusr.com/ugd/628a76_a4bffa6041d04e018b5e98af2976269c.pdf?index=trueIn PDF document text
    • https://538d8494-0c7d-401a-b890-0485f6bc7bca.filesusr.com/ugd/29c71c_777332157a9d4733889a2713e56010c7.pdf?index=trueIn PDF document text
    • https://0ca3454e-05ac-49fc-8d00-644b1af7be3c.filesusr.com/ugd/8bf3fc_540168313bdb441aa47926e7a74aa332.pdf?index=trueIn 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_off0000e029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE029 5424 bytes
SHA-256: e8c80e5fd32d503969b0a5da76c275dcaeacbb598184d0deccf3a81a6dd7b5af
font_01_sfnt_off0000f282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF282 10440 bytes
SHA-256: 9186f58ef0a7a35f0f67da0bd2a9894f4fff746efd3e0d212fce1b40415d3986