Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca8fc219da52a6bd…

MALICIOUS

PDF

35.6 KB Created: 2020-08-23 19:31:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4020a77a855da99a8f112dbd9de37a91 SHA-1: 28d6fc79b9dbf2f7fbffd82f880cb308b6f39d7f SHA-256: ca8fc219da52a6bd58f90e44c820c4d8d3337f6ce4558916fd9e75f60d79a65a
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources, indicating a link farm or redirection strategy. One critical heuristic firing identified a link to a known malicious redirector, `https://ttraff.cc/pify?keyword=sc+dmv+acceptable+forms+of+identification`, which is the primary indicator of malicious intent. The document body, though partially obfuscated, contains text related to identification forms, suggesting a lure to trick users into clicking the malicious link. No scripts were extracted from this sample.

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.cc/pify?keyword=sc+dmv+acceptable+forms+of+identification
    • http://gobulo.ywcahealthandfitness.org/uploads/1/3/2/6/132681481/d3d4075199.pdf
    • http://lizevos.alphakappawvdkg.com/uploads/1/3/1/3/131383483/fb5edf7c303897e.pdf
    • http://files.losangelescountyfirefightersemeraldsociety.com/uploads/1/3/2/6/132680827/504bbe2d2.pdf
    • https://cdn.shopify.com/s/files/1/0440/9124/4696/files/contracciones_isotonicas.pdf
    • https://cdn.shopify.com/s/files/1/0430/8795/4073/files/fiwutedapajotozokurev.pdf
    • https://cdn.shopify.com/s/files/1/0437/5805/9671/files/lumofofuzi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6146/8567/files/secret_of_secrets_abdul_qadir_jilani.pdf
    • https://cdn.shopify.com/s/files/1/0431/2501/4684/files/medical_virology_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/9529/4109/files/biblical_hebrew_vowels.pdf
    • https://cdn.shopify.com/s/files/1/0465/4438/8246/files/10713805955.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6202/files/noaa_severe_weather_storm_reports.pdf
    • https://cdn.shopify.com/s/files/1/0429/7388/8671/files/mijaluwefijezi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mofofuledezenededur.pdf
    • https://cdn.shopify.com/s/files/1/0433/7182/3262/files/sitibofifexufelodaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/3546/7682/files/38122115610.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_off00004c83.bin
dfd526b9e83cbb75a6691a28c1a50942873afec02d6ff5699fc3e91afe3a44c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x4C83 5604 bytes
font_01_sfnt_off00005f70.bin
d9790fa86538471a259853729409185c77ded1ae72f2b1899d843a3e84091a96
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F70 9928 bytes