Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ee1b8d9a4c2a187…

MALICIOUS

PDF

87.9 KB Created: 2021-03-30 03:19:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 5e9de20794f1987d5447b827130f38dd SHA-1: 582a8b833504c6d598d9e7dcbe0f36ae256d3f6a SHA-256: 6ee1b8d9a4c2a18717c2529e502d64c7c92679d89d76c09ae16ae1206bea2cca
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 0.9989

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/wix?keyword=coleman+6-person+instant+cabin+tent PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4455898/normal_6000c804b8ba8.pdfIn PDF document text
    • https://ravekenelar.weebly.com/uploads/1/3/4/0/134041687/9613644.pdfIn PDF document text
    • http://lorenbayi.com/299619002241mme7.pdfIn PDF document text
    • https://tikigafose.weebly.com/uploads/1/3/0/8/130874564/8605487.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409826/normal_6014aab7b5a58.pdfIn PDF document text
    • https://fomunova.weebly.com/uploads/1/3/4/6/134684458/jurirafup-sitevitejo.pdfIn PDF document text
    • http://aov.one/hand_to_god_play_scriptudpn9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495264/normal_6023300a36894.pdfIn PDF document text
    • http://tuimag.ru/dd_miniatures_3d_print_reddital26l.pdfIn PDF document text
    • http://toolsbestpricemicrometer.site/search_instagram_account_by_email0gio1.pdfIn PDF document text
    • https://popupobapovuzus.weebly.com/uploads/1/3/4/0/134012290/7079134.pdfIn PDF document text
    • https://gasaromub.weebly.com/uploads/1/3/0/7/130776100/0a3e9522e61866.pdfIn PDF document text
    • https://monokuzofo.weebly.com/uploads/1/3/2/7/132741222/1514838.pdfIn PDF document text
    • https://nebenumepidenok.weebly.com/uploads/1/3/5/3/135307723/2669851.pdfIn PDF document text
    • http://kpovli.ru/what_is_the_order_of_the_vc_andrews_flowers_in_the_attic_seriesqgg1h.pdfIn PDF document text
    • https://bivixogerixud.weebly.com/uploads/1/3/4/4/134469213/xelivuwedijube_fekipibed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471959/normal_60171c4036575.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/buwosevax/asepsia_concepto.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/41702648297.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a82d5edc-fd91-4cc8-8422-556621b7d960/what_is_visual_data_analytics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29425ff7-5e97-425a-a17e-f61bc28a84e5/campark_t30_trail_camera_setup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6bb625b-d874-4510-b94c-5db74166539c/menatugijutarelegexip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/741c4f9e-07b7-4242-bae1-483868e4de8d/wurodujivulenadokokesari.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/musica_gratis_para_celular.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74295bc0-d2c6-48d9-82c7-6c786ad83d9f/43249100715.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010d20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D20 5216 bytes
SHA-256: 3aa032a2b3f476256308d0f029d2c566b0194caf34d75418d3b0a27e2658083c
font_01_sfnt_off00011ebc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EBC 10784 bytes
SHA-256: eff2dcd807e9541eb576276f906c81b310fff6e109bf4f1cd3e24a1da4c46404
font_02_sfnt_off00014395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14395 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2