Malicious PDF — malware analysis report

Static analysis result for SHA-256 cff38f9655212e24…

MALICIOUS

PDF

42.6 KB Created: 2020-08-09 20:28:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a01c9c0778d72fa4a8521c481cc79bc0 SHA-1: 1180276730a00e78bff9a0e4b426d215cf9afbad SHA-256: cff38f9655212e2448ef5e8fc8d4f1d59d71990c237b524dd551bcfbf058b3a3
128 Risk Score

Malware Insights

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

The PDF file contains numerous links, including a critical finding of a malicious redirector link pointing to 'ttraff.com'. This URL is part of a link farm designed to obscure the ultimate destination. The document body also contains a call-to-action phrase, suggesting a lure to trick users into clicking the malicious link. The presence of multiple embedded links, many pointing to Shopify domains, indicates an attempt to appear legitimate while distributing malicious content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=basic+electronics+full+book+pdf+free+download
    • http://files.livinglovingpraying.com/uploads/1/3/1/4/131453194/2412880.pdf
    • http://files.mattblackhall.com/uploads/1/3/1/3/131382808/1426898.pdf
    • http://dijojago.bonelabradio.org/uploads/1/3/1/1/131164250/gananixutozaf_sarefuruji_nebofofi.pdf
    • http://xutawi.shakracentre.com/uploads/1/3/1/0/131071243/dudakixolu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5156/5724/files/cambridge_past_exam_papers_o_level_mathematics.pdf
    • https://cdn.shopify.com/s/files/1/0435/7043/0115/files/git_bash_make_command_not_found.pdf
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/gikiwifejadir.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/befuxaj.pdf
    • https://cdn.shopify.com/s/files/1/0440/7685/9557/files/10863146946.pdf
    • https://cdn.shopify.com/s/files/1/0434/5213/7622/files/kwikset_deadbolt_installation_instructions.pdf
    • https://cdn.shopify.com/s/files/1/0441/1277/3272/files/81717781028.pdf
    • https://cdn.shopify.com/s/files/1/0429/9603/9839/files/20971079069.pdf
    • https://cdn.shopify.com/s/files/1/0433/8771/5742/files/23698598111.pdf
    • https://cdn.shopify.com/s/files/1/0437/6566/1845/files/skyrim_dance_mod.pdf
    • https://cdn.shopify.com/s/files/1/0430/2798/8634/files/social_media_advertising_definition.pdf
    • https://cdn.shopify.com/s/files/1/0435/9618/5763/files/appsc_group_2_mains_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0445/8813/8660/files/abolition_of_slave_trade_in_west_africa.pdf
    • https://cdn.shopify.com/s/files/1/0433/6772/7269/files/angular_5_tutorial_for_beginners_step_by_step.pdf
    • https://cdn.shopify.com/s/files/1/0432/9147/6133/files/nietzsche_beyond_good_and_evil_free.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_off00005bce.bin
ef814ca52d82f63280d2aa6a29a400dbcf8545062784e13f7bdad6c892504c3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BCE 5492 bytes
font_01_sfnt_off00006e96.bin
33d80b5e357abfa3ea91f5eff18928953f8e36d8e9a7aea158c838e8ae756dd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E96 2116 bytes
font_02_sfnt_off00007860.bin
b00c7754f5b0da30a2d7cfc8e2a0a61fe75a70ab2bf5badd53a4c1814cf81de2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7860 10168 bytes

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