Malicious PDF — malware analysis report

Static analysis result for SHA-256 581384a40d0907ea…

MALICIOUS

PDF

31.4 KB Created: 2020-10-06 17:00:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 4eea5159f3cccc8fb761483387a0418b SHA-1: 2a08ea6d2f7f0b68e40dcaacae747f0870b8489d SHA-256: 581384a40d0907eac65a02940339e3db548b7ba6d1403fde4a0c3b599573edec
152 Risk Score

Malware Insights

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

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

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/strik?keyword=digital+materiality+in+architecture+pdf In PDF document text
    • https://site-1042010.mozfiles.com/files/1042010/vudirotarevupopope.pdfIn PDF document text
    • https://site-1036971.mozfiles.com/files/1036971/kigebuzaxajilenut.pdfIn PDF document text
    • https://site-1036661.mozfiles.com/files/1036661/14607991699.pdfIn PDF document text
    • https://site-1040210.mozfiles.com/files/1040210/wigasedi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9650/1149/files/manual_retractable_awnings_near_me.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/3920/7836/files/64783534685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/9420/0487/files/gejonixivativur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6728/5410/files/nd_miata_spring_rates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3111/6448/files/its_getting_better_all_the_time_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6346/6389/files/piercings_for_men.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2504/6423/files/t51b_power_armor_plans_fallout_76.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1097/4111/files/davson_danielli_model_deutsch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7746/2937/files/bugbear_clan_names.pdfIn 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_off00005816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5816 5492 bytes
SHA-256: 3fd27bfba6d914f26235885a9d4065fc522efab3610eefe8287887cda6e887cb

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