Malicious PDF — malware analysis report

Static analysis result for SHA-256 04d6fd58c695c016…

MALICIOUS

PDF

86.8 KB Created: 2021-03-23 21:31:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: da2f9c978fa0c74a7a86d17e816cd5d2 SHA-1: 003eb8199c407f2eda319478e784cc601308ac33 SHA-256: 04d6fd58c695c0165ae709779f96870bd7da7011c353d044146e0efdb2596453
146 Risk Score

Malware Insights

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

The PDF document contains an embedded URI pointing to a suspicious domain, identified as a phishing lure by heuristics. The ML classifier and ClamAV also flagged this PDF as malicious. While no scripts were directly extracted, the nature of the embedded URI and the heuristic firings suggest an attempt to redirect the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://bologen.ru/wix?keyword=causes+of+the+civil+war+video+worksheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4390097/normal_603298bf145f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470961/normal_6022173f57111.pdfIn PDF document text
    • http://beautysale.site/golikolelazigivijai0j08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382629/normal_603270d992b54.pdfIn PDF document text
    • http://nnorm-id.com/important_and_interesting_facts_about_human_body_parts0uvzi.pdfIn PDF document text
    • http://pidagenavuziw.mywebcommunity.org/sinusite_chronique.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382617/normal_6015b4f0c3962.pdfIn PDF document text
    • http://hotsales-com.xyz/wowujewuzemghcxr.pdfIn PDF document text
    • http://xenalebosob.scienceontheweb.net/nofesepawezamoxod.pdfIn PDF document text
    • http://fupemagis.mywebcommunity.org/importance_of_english_in_multilingual_society.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366664/normal_6013311c52a6b.pdfIn PDF document text
    • http://napowojeba.medianewsonline.com/25922738790.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/39a486d3-7253-49aa-83ed-ef8b87bdf637/tuwusisuwatod.pdfIn PDF document text
    • http://wejufutaz.onlinewebshop.net/95230430853.pdfIn PDF document text
    • http://wobadumiravolu.atwebpages.com/bewupotisaso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db1c72e2-4d43-4546-a357-242e0c89d747/george_foreman_evolve_grill_with_waffle_plates_and_ceramic_grill_plates_-_platinum.pdfIn PDF document text
    • http://tevefetilojas.atwebpages.com/porter_cable_bn125a_not_firing.pdfIn PDF document text
    • http://rujidafedisezu.atwebpages.com/43336234888.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df963e30-69ea-4078-9144-f4ac9381d1a8/fajorepuwabaf.pdfIn PDF document text
    • http://duxegejuw.atwebpages.com/55615324699.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02be5842-946b-40b3-834b-3b0f051e497b/28106549600.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8c8c84f-410a-4531-8f48-c321f2dec51b/groove_essentials_2.0_poster.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29b8a52e-f0d0-45fb-a8e9-e91736c5022d/how_many_episodes_does_attack_on_titan_season_3_has.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a367d68-9231-484c-bcec-ff53a62acbc1/which_college_is_best_for_mechanical_engineering_in_ap.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_off000115ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115CE 5232 bytes
SHA-256: 356d7e77c8412aaca845d9ce656e501a997e9f5abc9bd46d08a9b16880084ea3
font_01_sfnt_off000127a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127A5 11156 bytes
SHA-256: 256605ab381e6e42e551c97831c5660c3be454b6a8f195e22131a5b8a8781759