Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d07e8065a87085b…

MALICIOUS

PDF

43.0 KB Created: 2020-08-01 23:03:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b98fcad96ef3c31ea9c9a73cad492bf SHA-1: 0030ed6cc9e350a791b4c025760a1f8c7620cdf6 SHA-256: 1d07e8065a87085bb0411f0963b951b57d16f9f32deb95f86663c6ed5e56571d
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing indicating a PDF link farm. One of the primary links, 'https://ttraff.ru/pify?keyword=read+n+characters+given+read4', is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to this malicious URL and other URLs hosted on cdn.shopify.com, suggesting a coordinated effort to lure users to malicious sites.

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=read+n+characters+given+read4
    • http://files.froggyfibersandgifts.com/uploads/1/3/0/8/130814081/8131592.pdf
    • http://files.official-sd.us/uploads/1/3/1/0/131070246/doxidumaxomuvor-pujula-sagozef.pdf
    • http://files.leroyandhelenenterprises.com/uploads/1/3/0/9/130969532/savusipeg.pdf
    • http://files.valleyofthedunes.com/uploads/1/3/2/7/132741556/8038013.pdf
    • http://files.paradigmshiftedu.com/uploads/1/3/0/7/130775448/24705.pdf
    • https://cdn.shopify.com/s/files/1/0430/5308/8919/files/pidukoju.pdf
    • https://cdn.shopify.com/s/files/1/0434/2887/2359/files/redetoni.pdf
    • https://cdn.shopify.com/s/files/1/0440/1712/3486/files/tedezelom.pdf
    • https://cdn.shopify.com/s/files/1/0439/3612/0990/files/transfer_thunderbird_to_new_computer.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75609531209.pdf
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/from_import_python.pdf
    • https://cdn.shopify.com/s/files/1/0434/0868/7269/files/81454119871.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/82191842179.pdf
    • https://cdn.shopify.com/s/files/1/0436/1306/1277/files/13367972204.pdf
    • https://cdn.shopify.com/s/files/1/0431/9952/9120/files/derren_brown_tricks_of_the_mind.pdf
    • https://cdn.shopify.com/s/files/1/0434/5580/7654/files/30998794874.pdf
    • https://cdn.shopify.com/s/files/1/0435/0381/2773/files/55589460812.pdf
    • https://cdn.shopify.com/s/files/1/0438/5318/5174/files/wavanex.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_off00005f55.bin
6a8df7c88c1992065fe70cdfa071040ec2a7e6f5a8d49e56214f611e8f980e5d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F55 5324 bytes
font_01_sfnt_off0000717e.bin
c3a6ab29eeeb91eac09cacd75f0313e8d82fabdd9bb6ca24c67cbde4bd8f8df1
pdf-font-stream PDF embedded font (sfnt) at offset 0x717E 14340 bytes