Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee9997b14a1e3b3…

MALICIOUS

PDF

72.7 KB Created: 2021-03-04 03:33:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: cbbd44c076c197e1064170e0b00365b7 SHA-1: 54512ba6dfd42f362585fd95ba2ef11d783f606d SHA-256: 2ee9997b14a1e3b3fdd0363532f8bee44c8918f2c14916c66b9702ec89ffa927
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ClamAV as a phishing/trojan. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a tactic of using link farms on disposable hosting to obscure malicious intent. The presence of URLs like 'https://fokemale.ru/123?utm_term=dell+inspiron+n5010+battery+price+in+pakistan' suggests a lure related to product searches, likely to direct users to phishing sites or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://fokemale.ru/123?utm_term=dell+inspiron+n5010+battery+price+in+pakistan PDF link annotation
    • http://ueuniti.xyz/26565530321a8elt.pdfIn PDF document text
    • http://lezobul.medianewsonline.com/whirlpool_quiet_partner_i_stops_mid_cycle.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408462/normal_5ffc9e6c4e1e6.pdfIn PDF document text
    • http://zikewexer.scienceontheweb.net/how_to_use_brinkmann_propane_smoker.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388181/normal_5ffc1011d6c4b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412761/normal_6000cb4d7f595.pdfIn PDF document text
    • http://suwefazimim.medianewsonline.com/66146474278.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410975/normal_603c804a6ad3e.pdfIn PDF document text
    • http://rexuwoxaga.sportsontheweb.net/what_is_the_directv_remote_code_for_onn_tv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489852/normal_601b63cd393b1.pdfIn PDF document text
    • http://tideparipawovu.mygamesonline.org/how_to_get_a_helicopter_in_gta_5_cheat_ps4.pdfIn PDF document text
    • http://jivusibofonefud.mygamesonline.org/vugapubenuvarasejugagekif.pdfIn PDF document text
    • http://larokamexi.sportsontheweb.net/spectrum_tv_remote_control_user_guide.pdfIn PDF document text
    • http://ipai.online/medieval_period_of_indian_history_stretches_from_the7sq1b.pdfIn PDF document text
    • http://dikegebe.mygamesonline.org/20572298325.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/waduzirader/how_much_does_lifetime_gym_cost.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/antutu_app_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/visit_scotland_travel_guide.pdfIn PDF document text
    • http://zikoliduxa.atwebpages.com/41082260136.pdfIn PDF document text
    • http://zorikeroz.onlinewebshop.net/national_mall_walking_tour_map.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/gazasebaluvelid.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_off0000ddcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDCB 5552 bytes
SHA-256: cc7f8abcd04777e5b445e15bfe095789d3d7d3e72dcaa67243f2b706bb14c86b
font_01_sfnt_off0000f0d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D6 10728 bytes
SHA-256: b626d9668ea743840a9a23e9e657ea510cecbe825b890894bcb7ed9fbb904fd9

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