Malicious PDF — malware analysis report

Static analysis result for SHA-256 f990b5747a5a21cc…

MALICIOUS

PDF

45.8 KB Created: 2020-08-02 02:03:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f103920dec0a1fa421d44dbedab2cc2 SHA-1: b5af096c4db5b8681e80a6f5cfc1b540ea04c6ab SHA-256: f990b5747a5a21cc25c4c962736c66ee642cf5d74a826f3809d60afcdf28d416
120 Risk Score

Malware Insights

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

The PDF file contains a deceptive message and numerous embedded links, including one pointing to a known malicious redirector. The primary heuristic indicates that the PDF links to malicious redirector infrastructure. The document body, though obfuscated, contains the primary malicious URL. The presence of a link farm suggests an attempt to distribute malicious content or traffic. 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.com/pify?keyword=please+check+gdb+is+codesigned
    • http://files.jeffreydscott.com/uploads/1/3/2/7/132711999/6000058.pdf
    • http://files.zendoway.com/uploads/1/3/1/8/131856646/vabemolut-paxomelopiv.pdf
    • http://files.abivaonlineresources.com/uploads/1/3/0/8/130813612/fa0ba13b4e.pdf
    • http://files.overcott.com/uploads/1/3/2/6/132695519/4181826.pdf
    • https://cdn.shopify.com/s/files/1/0440/3865/2069/files/xitutakosolujenukuzikip.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/rojilisu.pdf
    • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/30342437997.pdf
    • https://cdn.shopify.com/s/files/1/0431/0745/1042/files/50115292367.pdf
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/xiwisososet.pdf
    • https://cdn.shopify.com/s/files/1/0429/2182/0313/files/wodulovivazuxofuxototas.pdf
    • https://cdn.shopify.com/s/files/1/0437/5989/4689/files/24779209132.pdf
    • https://cdn.shopify.com/s/files/1/0434/7478/0312/files/90585400862.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/rejaveg.pdf
    • https://cdn.shopify.com/s/files/1/0436/8538/0246/files/wotin.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3267/files/rofuluporige.pdf
    • https://cdn.shopify.com/s/files/1/0431/7646/0447/files/64156269914.pdf
    • https://cdn.shopify.com/s/files/1/0434/1969/7303/files/trapping_rain_water_using_stack_java.pdf
    • https://cdn.shopify.com/s/files/1/0435/0427/1524/files/73410340769.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
font_00_sfnt_off000069fb.bin
8481cec48cd0a66cbf9b3ed79c13f51483bf79c19dd16dd9f48bcbf7f1be97e2
pdf-font-stream PDF embedded font (sfnt) at offset 0x69FB 5308 bytes
font_01_sfnt_off00007bfc.bin
72a3fe65f0a21df30f240897224061cfa351088b80a4eb601fb5defb198ec993
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BFC 2268 bytes
font_02_sfnt_off0000860e.bin
5f50b93dbcbc93c5d521c8c9c9a38e7adb26a20f084e53ac72c2f503c76c573c
pdf-font-stream PDF embedded font (sfnt) at offset 0x860E 10372 bytes