Malicious PDF — malware analysis report

Static analysis result for SHA-256 c37e17218e67ad27…

MALICIOUS

PDF

66.0 KB Created: 2020-07-30 14:01:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4892a34d950e7b3610d6969089255b0b SHA-1: f9be42167b7e3f2d51ea050bc95998efc1c5d0e2 SHA-256: c37e17218e67ad27d4048d14e84e61afbd5d1a313a63a52c1c4e0b6af0adbe44
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=apprendre+alphabet+arabe+pdf'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous links to external PDFs, including one hosted on cdn.shopify.com. The document body appears to be obfuscated or corrupted, but the presence of the Arabic learning keyword in the malicious URL suggests a social engineering lure.

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=apprendre+alphabet+arabe+pdf
    • http://files.colleeniversen.com/uploads/1/3/0/7/130739678/paxiwi-marewigiwulami-lozerasogutuwu.pdf
    • http://files.letstrythat.ca/uploads/1/3/1/1/131164311/zugujivi-wirizufobimim.pdf
    • http://files.crupropertymanagement.es/uploads/1/3/1/4/131408502/woxawutuwiv.pdf
    • http://files.jordanthariel.com/uploads/1/3/1/6/131636903/posekigobufad_guxade.pdf
    • http://files.emmanuelcrespoartworks.com/uploads/1/3/1/4/131453024/newikun_xonipaxop_gejefepimawadu_fibef.pdf
    • http://files.crupropertymanagement.es/uploads/1/3
    • https://cdn.shopify.com/s/files/1/0433/6756/3429/files/28192218526.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pufabupenidobuxix.pdf
    • https://cdn.shopify.com/s/files/1/0440/5736/2597/files/4515397429.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56697352128.pdf
    • https://cdn.shopify.com/s/files/1/0429/8784/7843/files/xigexolovegomivapomej.pdf
    • https://cdn.shopify.com/s/files/1/0429/1058/0903/files/97221308026.pdf
    • https://cdn.shopify.com/s/files/1/0429/8234/2815/files/banebupov.pdf
    • https://cdn.shopify.com/s/files/1/0433/3617/1679/files/28645539786.pdf
    • https://cdn.shopify.com/s/files/1/0440/7784/2597/files/wosusigivuxekekenodedijus.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/dakulizo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6351/7092/files/kugapu.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
stream_007_off0000c894.bin
47d4a5b855ac2a3e61d9e0cc181c19e5d8a7d1db90ec81b4f10c0f6fc0f24a47
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xC894 27016 bytes
font_00_sfnt_off0000882c.bin
10963ac800b3376636c51c5984e2c6825c7947b1a0b6f8e85d3e7b28e11c53aa
pdf-font-stream PDF embedded font (sfnt) at offset 0x882C 4712 bytes
font_01_sfnt_off0000980d.bin
9930b18029ce9e5922ee44ec40a6f0cf0ff0fbbb17ac78f5a4422ef5f4fb6bfc
pdf-font-stream PDF embedded font (sfnt) at offset 0x980D 16644 bytes