Malicious PDF — malware analysis report

Static analysis result for SHA-256 29d1c6129163ffa0…

MALICIOUS

PDF

41.4 KB Created: 2020-08-22 15:14:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 995cfd33c377d764eb3ca82e8b11d19e SHA-1: 1d9fb5fd36e4d82acbbca45d0e647700db1ea464 SHA-256: 29d1c6129163ffa0412bfdd8b9fd8a239402f3029c27ad8dde1d4cc7e3dcc633
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, includes text related to 'screenshot not displaying' and a URL that aligns with the malicious redirector. This suggests a phishing or scam attempt to redirect users to malicious infrastructure.

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=screenshot+not+displaying+in+extent+report
    • http://nanudeju.meghancaprez.com/uploads/1/3/1/1/131163635/japagadaguzaleju.pdf
    • http://files.jimpendergrass.com/uploads/1/3/2/8/132815961/xabixejeje-nenowapiwage-jisematonalon.pdf
    • https://cdn.shopify.com/s/files/1/0429/9823/5289/files/93468149185.pdf
    • https://cdn.shopify.com/s/files/1/0435/2140/9184/files/vepubivezixeradavejizoj.pdf
    • https://cdn.shopify.com/s/files/1/0438/8470/7992/files/bloody_bones_laurell_k_hamilton.pdf
    • https://cdn.shopify.com/s/files/1/0433/2650/5118/files/mobile_friendly_email_template_design.pdf
    • https://cdn.shopify.com/s/files/1/0431/9540/0356/files/13022278667.pdf
    • https://cdn.shopify.com/s/files/1/0429/7749/3146/files/54449598321.pdf
    • https://cdn.shopify.com/s/files/1/0430/0124/9955/files/practical_skills_in_chemistry_john_dean.pdf
    • https://cdn.shopify.com/s/files/1/0434/8710/1094/files/12191730973.pdf
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/48505415446.pdf
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/vijikuwatigeg.pdf
    • https://cdn.shopify.com/s/files/1/0432/1856/7335/files/dumasasonigagibuputofifi.pdf
    • https://cdn.shopify.com/s/files/1/0435/8491/3565/files/datasheet_arduino_uno_r3_smd.pdf
    • https://cdn.shopify.com/s/files/1/0432/8669/1998/files/duvoduzedimadepeguvij.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006157.bin
561130bd3e68935d971e04c167235241aef7940b12a2af4cd093b1aa81a1acaf
pdf-font-stream PDF embedded font (sfnt) at offset 0x6157 5608 bytes
font_01_sfnt_off0000745e.bin
dbf6c7f5e5b5ef86cb82b8cf2ee8a00cd246ed6ff177181ae2447640ca695a8a
pdf-font-stream PDF embedded font (sfnt) at offset 0x745E 10652 bytes