Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6d4e10d1f1b5dbe…

MALICIOUS

PDF

40.9 KB Created: 2020-08-22 07:07:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48ac9114cb6ab1664a8d63936d13b4e9 SHA-1: fc16e1cf3e670ed1eb79310992cd6477392fc8a2 SHA-256: f6d4e10d1f1b5dbe71775d842cffebd046e70918b124809069d84abdf28444df
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many of which are hosted on potentially suspicious domains. The document body itself contains a URL that is also flagged as a malicious redirector. These elements strongly suggest an attempt to lure users to malicious sites.

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=inside+out+emotions+worksheet
    • http://vuvavuwo.championparty.com/uploads/1/3/1/6/131606162/xeravu.pdf
    • http://nepudidu.craftymedicstore.com/uploads/1/3/0/8/130814017/4801051.pdf
    • http://files.olivetcongregational.org/uploads/1/3/1/1/131164198/nuwabitigate-bujuka.pdf
    • http://files.bustihistoricalsociety.com/uploads/1/3/1/4/131453421/nubugo.pdf
    • http://files.jsboutique-llc.com/uploads/1/3/1/8/131857818/9e58638.pdf
    • https://cdn.shopify.com/s/files/1/0438/1717/3149/files/chrysalids_chapter_4_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/2390/0565/files/keyword_research_guide_2019.pdf
    • https://cdn.shopify.com/s/files/1/0437/6369/5770/files/nuburaxezedag.pdf
    • https://cdn.shopify.com/s/files/1/0430/7550/2234/files/llanberis_slate_guide_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/0574/7095/files/69879961103.pdf
    • https://cdn.shopify.com/s/files/1/0428/6621/3031/files/lafokadixaxu.pdf
    • https://cdn.shopify.com/s/files/1/0428/6529/5526/files/89498599476.pdf
    • https://cdn.shopify.com/s/files/1/0434/4607/5542/files/xebemejumabibazavi.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/burket_s_oral_medicine_10th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/9679/3503/files/bearing_capacity_of_soil_test.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_off00005966.bin
9d268d0e5221093d503452820208ebf2d89c72c1f738ce955545c807c76878a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5966 4916 bytes
font_01_sfnt_off000069f2.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69F2 1800 bytes
font_02_sfnt_off0000727f.bin
7ebb4ebce436d932eb62d057d7f93332bd98f4dc4d65a36133758abdec0ca59c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x727F 10536 bytes

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