Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a4745cdedafe0ef…

MALICIOUS

PDF

76.1 KB Created: 2021-03-23 10:48:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: d78480a3b9829a745b6f8c823a263473 SHA-1: 11daa4fa0eddf1be60e60b6881f1e9069a1919ef SHA-256: 2a4745cdedafe0ef92802d8a99f991dcbec288dbca78f5f25fdd748fd21a0599
184 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to disposable domains, indicating a link farm or SEO spamming operation. ClamAV detected it as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. While no scripts were directly extracted, the nature of the links suggests a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8022

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 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
  • 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://botokaw.ru/award?keyword=html+5+tags+pdf PDF link annotation
    • http://morpeoplelife.ru/44959481252fw5yw.pdfIn PDF document text
    • https://pazolumaf.weebly.com/uploads/1/3/4/3/134356568/lowavefekoteg_sinoded_mamata_dolitimugik.pdfIn PDF document text
    • http://prizinsta365.website/what_is_pe_error_in_lg_washing_machine_top_load6ryod.pdfIn PDF document text
    • https://cdn.sqhk.co/dejuxafe/t4jbjc7/internet_speed_test_speed_test.pdfIn PDF document text
    • https://romarifekaxa.weebly.com/uploads/1/3/2/6/132683260/e9f58671.pdfIn PDF document text
    • https://cdn.sqhk.co/wizokawoxo/hizuCEB/3213415325.pdfIn PDF document text
    • http://lp-consalt.ru/what_is_a_briggs_and_stratton_intek_engineuy8kd.pdfIn PDF document text
    • https://cdn.sqhk.co/vemosoveveb/bgiW0Ge/business_sales_strategy_proposal_presentation_template.pdfIn PDF document text
    • https://wexivupesowapab.weebly.com/uploads/1/3/2/7/132712225/nazexejobuzebedez.pdfIn PDF document text
    • https://begafirezudafo.weebly.com/uploads/1/3/1/4/131438667/6273976.pdfIn PDF document text
    • https://sovufejado.weebly.com/uploads/1/3/0/7/130740048/mufonibasavi.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/voxipanovigepiv/pupugufedekafufiriva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29047053-d56f-45f0-8dbd-c9e061ae5c1e/5778022378.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f09898bb-a5a9-4698-938a-1cd29f6edeaa/koritez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06e04080-1bf8-4ae0-a96f-c84aefbec647/the_challenge_inferno_3_season_14_episode_7.pdfIn PDF document text
    • https://070488ba-e3d9-4c74-834b-445551f5513c.filesusr.com/ugd/fb83f1_d54aabad043a479e8946c662a9f234b0.pdf?index=trueIn PDF document text
    • https://e86c6366-0652-46cb-9e1f-5633a133dba9.filesusr.com/ugd/510a18_a6ed66d083fc4c1482122f3a985cbe8e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1ad782b-f640-47e9-9b33-2d026cf82297/the_maze_runner_book_3_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/tapevugixaxitafema.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/2012_jeep_cherokee_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zubata/94786419611.pdfIn PDF document text
    • https://709e7e89-b264-4d73-b757-064736ed86f1.filesusr.com/ugd/f523c3_d5adbc110f674e29a6feb97bbbab45ce.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/sun_joe_pressure_washer_wont_use_soap.pdfIn PDF document text
    • https://d6236f05-450e-4b96-9875-1783d83c708b.filesusr.com/ugd/912de2_99f9a638e2e34a30842869666b972a9f.pdf?index=trueIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000106f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106F1 5348 bytes
SHA-256: 61f2c14a792a84a305cb6de09b6a87c866861988352a508c27f9c610201fde60

Open this report in the interactive analyzer, or submit your own file for analysis.