Malicious PDF — malware analysis report

Static analysis result for SHA-256 479e52cd921f85a5…

MALICIOUS

PDF

43.7 KB Created: 2020-08-12 18:15:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b45ba5671fe2bdedce5999bae339992 SHA-1: f6638fb37732690702e978a271285e127b72d253 SHA-256: 479e52cd921f85a5b4a618c81f04bcd4fa6f67cffd04932c26375fa642995f9d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to shopify domains hosting other PDFs, but one critical link redirects to a known malicious domain, ttraff.com. This suggests a link farm or SEO poisoning tactic designed to lure victims to malicious infrastructure. The document body itself is heavily obfuscated and contains the malicious URL, indicating it's part of the lure. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.com/pify?keyword=anemia+ferropenica+pdf+unam
    • http://files.southernwineroads.com/uploads/1/3/1/6/131637695/32966867.pdf
    • http://files.ithacaymca.com/uploads/1/3/0/7/130775375/malugewa.pdf
    • http://files.vision2041.com/uploads/1/3/0/7/130776640/638cc4eb80.pdf
    • http://files.boxfit808.com/uploads/1/3/1/6/131636889/depodikapeg-wevokavezunuma-rimisadikif-jarigifisuz.pdf
    • http://domax.thomasjcapobianco.com/uploads/1/3/0/7/130739415/de985957.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/febalig.pdf
    • https://cdn.shopify.com/s/files/1/0431/0515/7284/files/larva_aedes_aegypti.pdf
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/75389206512.pdf
    • https://cdn.shopify.com/s/files/1/0428/3806/5308/files/godefimufowidesu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6623/6834/files/kesuwuk.pdf
    • https://cdn.shopify.com/s/files/1/0436/2783/9641/files/7827690685.pdf
    • https://cdn.shopify.com/s/files/1/0433/0985/8984/files/ziwowi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2720/2205/files/business_english_books.pdf
    • https://cdn.shopify.com/s/files/1/0440/6483/3686/files/29203750610.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/22271122494.pdf
    • https://cdn.shopify.com/s/files/1/0429/1015/4908/files/77951463943.pdf
    • https://cdn.shopify.com/s/files/1/0435/0178/1156/files/32785596338.pdf
    • https://cdn.shopify.com/s/files/1/0439/6577/6030/files/fotulaxomazig.pdf
    • https://cdn.shopify.com/s/files/1/0436/2190/8640/files/fufobalevibujawigavetaro.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_off00006619.bin
953d14ae34635fcf621d4a0a5089151ee360f03f65e781e67a1ac7830f00437a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6619 5080 bytes
font_01_sfnt_off0000773e.bin
a9bec3fa9dca969a27ca51a735a73ec9de6c0c1c2146d2b3862d885a0ab17200
pdf-font-stream PDF embedded font (sfnt) at offset 0x773E 13660 bytes