Malicious PDF — malware analysis report

Static analysis result for SHA-256 395783fecca4265a…

MALICIOUS

PDF

46.2 KB Created: 2020-08-19 22:01:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c305339abb6ca966c8ce842e8f4db25f SHA-1: 2483e50597971d623d21e2679d2e38cd751b1259 SHA-256: 395783fecca4265a4eb940cffc0c60c63b7b39d9d25d724ea5a53b72ed7b3184
160 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to ttraff.cc. Another critical heuristic, PDF_SEO_LINK_FARM, indicates a large number of external PDF links, many hosted on cdn.shopify.com. The SE_ADVANCE_FEE_SCAM_LURE heuristic strongly suggests the document's content is designed to trick users into a financial scam. The presence of the malicious redirector URL and the advance-fee scam lure are the primary indicators of malicious intent.

Heuristics 4

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.cc/pify?keyword=marketing+research+articles+pdf
    • http://fuxulik.sgquranclass.info/uploads/1/3/1/6/131636612/c7662420b.pdf
    • http://files.difortea.com/uploads/1/3/0/8/130813855/nazopidadulez_dojujipajafol.pdf
    • http://surid.thefishinprison.com/uploads/1/3/1/4/131406676/5b1934e2bc5.pdf
    • https://cdn.shopify.com/s/files/1/0436/1030/8765/files/adobe_flash_player_10_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/23422066838.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5502/files/80009085415.pdf
    • https://cdn.shopify.com/s/files/1/0434/3313/2184/files/equivalent_resistance_solved_problems.pdf
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/10501101561.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/59455831899.pdf
    • https://cdn.shopify.com/s/files/1/0434/7258/4861/files/wiguzunevusifasutaku.pdf
    • https://cdn.shopify.com/s/files/1/0435/6381/0975/files/35765648454.pdf
    • https://cdn.shopify.com/s/files/1/0431/5453/8656/files/7937049116.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/warerisomovu.pdf
    • https://cdn.shopify.com/s/files/1/0439/1793/4747/files/xokagukosenitazadu.pdf
    • https://cdn.shopify.com/s/files/1/0427/5005/0460/files/probiotics_article.pdf
    • https://cdn.shopify.com/s/files/1/0437/8699/3813/files/97457099154.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_off000076a9.bin
fcc8afab6bdf807dd08d4af636480223735fdf4767e72362501db63f4e3b457b
pdf-font-stream PDF embedded font (sfnt) at offset 0x76A9 5484 bytes
font_01_sfnt_off00008952.bin
74b629bac912b9d1200115858f898a4b221e3f82c8a2126ea624b866095f7fd8
pdf-font-stream PDF embedded font (sfnt) at offset 0x8952 10128 bytes