Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b0cc54e8f7c7789…

MALICIOUS

PDF

39.9 KB Created: 2020-08-13 22:33:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fe595562468bb8dfff6f6ee88468f9a SHA-1: bac5c447cc7609e69d42153919fa38610d23bad9 SHA-256: 4b0cc54e8f7c77892b5701384a432643576a4a91eaba2f6e9bf3fa093e5e6cfd
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains a link that redirects to a known malicious URL, disguised with a popular song title. This indicates a social engineering lure to trick the user into clicking the link. The PDF also contains a large number of external links, many pointing to Shopify, suggesting a link farm or SEO poisoning attempt to improve search engine ranking for malicious content. The primary malicious IOC is the redirector URL.

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=sidhu+moose+wala+badmashi+new+song
    • http://files.greatalleghenypassagecompanion.com/uploads/1/3/1/4/131406717/1944897.pdf
    • http://gewibe.inglesart.com/uploads/1/3/0/8/130873851/pixaju-kodojov-xokepe.pdf
    • http://files.teachartathome.com/uploads/1/3/1/3/131398424/8e2c867ad2ce.pdf
    • http://boditin.johnkenower.com/uploads/1/3/0/7/130740450/7aae6e.pdf
    • https://cdn.shopify.com/s/files/1/0431/8763/4338/files/set_theory_and_logic_robert_r_stoll.pdf
    • https://cdn.shopify.com/s/files/1/0440/3865/2054/files/security_risk_assessment_methodology.pdf
    • https://cdn.shopify.com/s/files/1/0433/0491/1006/files/17344514048.pdf
    • https://cdn.shopify.com/s/files/1/0433/1149/7366/files/49999635395.pdf
    • https://cdn.shopify.com/s/files/1/0432/9262/3001/files/valakakezekuva.pdf
    • https://cdn.shopify.com/s/files/1/0428/8220/3811/files/98567145054.pdf
    • https://cdn.shopify.com/s/files/1/0434/7238/8249/files/an_inspector_calls_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/0637/7633/files/10106739186.pdf
    • https://cdn.shopify.com/s/files/1/0435/4077/5064/files/33329835667.pdf
    • https://cdn.shopify.com/s/files/1/0429/7578/9215/files/pojefesefivelamamado.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zilifevuzumojewod.pdf
    • https://cdn.shopify.com/s/files/1/0434/4938/5126/files/standard_form_and_classifying_polynomials_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/6985/7176/files/69350793052.pdf
    • https://cdn.shopify.com/s/files/1/0431/4628/1121/files/69100426648.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/
    • https://cdn.shopify.com/s/files/1/0433/6985/7176/file

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005dec.bin
ad37ea6cbfa5d234c31e701dbb967710789e9d48a3ee0d2fd0ba8e8ef9006add
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DEC 5476 bytes
font_01_sfnt_off0000706e.bin
7c0933092cb5b216d053217dd8961de1c6c58d8004b462d59fdd4af8a7a87d87
pdf-font-stream PDF embedded font (sfnt) at offset 0x706E 9868 bytes