Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1766a608130b6b5…

MALICIOUS

PDF

49.8 KB Created: 2020-08-17 01:45:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 647a49c119e348eb433a0e7849a3505d SHA-1: 480a98600c7fed062a3340705ca7a946966c7079 SHA-256: a1766a608130b6b54620ed20a71d67a9deeb8218e755936164cb0799cb7e2303
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with at least one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=anecdotal+reading+records+template' which is flagged as malicious. The presence of a link farm heuristic further supports the malicious intent of directing users to external resources. No scripts were extracted, and the document body did not provide clear textual lures.

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=anecdotal+reading+records+template
    • http://jirifego.fabianwendt.com/uploads/1/3/0/8/130814328/92e4a.pdf
    • http://files.jenniferleepilates.com/uploads/1/3/0/7/130776655/2d8b7.pdf
    • http://files.courtyardantiquesolympia.com/uploads/1/3/1/3/131384293/84b5f7.pdf
    • https://cdn.shopify.com/s/files/1/0433/5802/7928/files/15742229393.pdf
    • https://cdn.shopify.com/s/files/1/0435/9657/8975/files/stock_market_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0432/2924/9694/files/half_life_2_cinematic_mod_alyx.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/grade_7_english_test_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0436/9183/5547/files/tubikubazu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0537/0791/files/tigepi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1045/7753/files/4734264643.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/49090326843.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cca.bin
c9f7ed075af034d774ad567faa2cb008aad2dc60c4f720ea11864ef2daca6028		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCA 5168 bytes
font_01_sfnt_off00007e33.bin
cb93f260eb2f6dd407c8a6cf4c070a13cb1fcde4044a2247185cb7908335e9e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E33 2468 bytes
font_02_sfnt_off000088f4.bin
262c7533741509e781e5199a499ac5ab1e607c57065f0568e685fe94aa1656f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88F4 10108 bytes
font_03_sfnt_off0000ab93.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB93 4324 bytes

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