Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5d1f3976d8c0e54…

MALICIOUS

PDF

44.9 KB Created: 2020-08-18 18:57:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0736910c5548de99cfaaeef4be435814 SHA-1: 674f41bbe41cb947198ddaa89009ab0f22d40d88 SHA-256: f5d1f3976d8c0e5463352ac15001bf2f107bafca394287b873983661f69c92c7
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to redirect users to malicious infrastructure, masquerading as a crime scene investigation report. The primary malicious URL identified is https://ttraff.ru/pify?keyword=crime+scene+investigation+report+examples, which is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other PDF links, suggesting a social engineering tactic to drive traffic to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://ttraff.ru/pify?keyword=crime+scene+investigation+report+examples
    • http://katudewig.artinamericamusic.com/uploads/1/3/0/9/130969408/siwuzoro.pdf
    • http://pubuluxi.lmctotherescue.com/uploads/1/3/1/1/131164250/0b8fe.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/zovutotewigirabeveb.pdf
    • https://cdn.shopify.com/s/files/1/0432/5392/4004/files/algorithms_and_data_structures_basic_toolbox.pdf
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/70928262469.pdf
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/destruction_warlock_pvp.pdf
    • https://cdn.shopify.com/s/files/1/0433/6569/5638/files/pisotujuzis.pdf
    • https://cdn.shopify.com/s/files/1/0432/5936/3478/files/prime_numbers_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0432/4573/2007/files/glory_to_god_forever_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/8278/4676/files/62303073313.pdf
    • https://cdn.shopify.com/s/files/1/0429/2473/6678/files/acute_infection_and_myocardial_infarction.pdf
    • https://cdn.shopify.com/s/files/1/0428/8941/2767/files/tenibuwomezofiviw.pdf
    • https://cdn.shopify.com/s/files/1/0429/9302/5187/files/atomic_structure_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0438/6694/7744/files/scert_assam_d._el._ed_books.pdf
    • https://cdn.shopify.com/s/files/1/0434/1104/6561/files/88622437435.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006424.bin
ac5a64d173f9afe584b4fb721d39793781ec74420a85b6dba8263acd10a1ef35
pdf-font-stream PDF embedded font (sfnt) at offset 0x6424 5192 bytes
font_01_sfnt_off000075b3.bin
06e15e8d163ceb487a5e625cdf00d73eac41dff3c2b244b196c8f2db561fa5dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x75B3 10140 bytes
font_02_sfnt_off00009850.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x9850 4324 bytes