Malicious PDF — malware analysis report

Static analysis result for SHA-256 32ca5e8e165d198f…

MALICIOUS

PDF

52.9 KB Created: 2020-08-21 11:20:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 428229fdc101bb06124ea15224614043 SHA-1: ff80ced3000b9dc5bae077c50723efb722abc906 SHA-256: 32ca5e8e165d198f6aa67323a4053a8efacf5812dc221e8d3cbb089df740833a
120 Risk Score

Malware Insights

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

The PDF file contains embedded links that point to a known malicious redirector, ttraff.cc. The document body text, though heavily obfuscated, includes the phrase 'electrical engineering mcq pdf free' and the malicious URL, suggesting a lure to trick users into clicking the link. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify, likely for SEO manipulation to increase visibility.

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=electrical+engineering+mcq+pdf+free
    • http://gurem.asiamitchelltabb.com/uploads/1/3/1/4/131454024/xoxowomukesenu_tozutafig.pdf
    • http://files.handfedapp.com/uploads/1/3/1/6/131637606/bf6cc4.pdf
    • https://cdn.shopify.com/s/files/1/0430/5059/8562/files/55065162367.pdf
    • https://cdn.shopify.com/s/files/1/0433/2929/0390/files/corrugated_plastic_roof_sheets_at_wickes.pdf
    • https://cdn.shopify.com/s/files/1/0438/3014/9270/files/hotel_california_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0436/2433/3472/files/hoyle_card_games_for_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0432/6113/2968/files/75244100293.pdf
    • https://cdn.shopify.com/s/files/1/0440/7685/9544/files/instant_structures_mod.pdf
    • https://cdn.shopify.com/s/files/1/0432/8495/5300/files/nakodadululapevupove.pdf
    • https://cdn.shopify.com/s/files/1/0433/7260/9686/files/pilawe.pdf
    • https://cdn.shopify.com/s/files/1/0429/5901/2006/files/basic_synonyms_list.pdf
    • https://cdn.shopify.com/s/files/1/0428/8223/6583/files/kenifipavasububuloxeka.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49816413057.pdf
    • https://cdn.shopify.com/s/files/1/0438/2497/1936/files/4040920904.pdf
    • https://cdn.shopify.com/s/files/1/0430/5754/5365/files/waralogasisulekugaviboz.pdf
    • https://cdn.shopify.com/s/files/1/0428/6034/7551/files/4804932860.pdf
    • https://cdn.shopify.com/s/files/1/0433/6762/8950/files/bpm_software_free_full_version.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_off00007795.bin
f047bc90fe0dada71e6aefcee91dc72017deadbee8c55082acc1c98819be0b58
pdf-font-stream PDF embedded font (sfnt) at offset 0x7795 5380 bytes
font_01_sfnt_off000089b3.bin
3d710a4b121cc3492c3eb33a949758d423697a96dc6070b99fa40abea3aa876d
pdf-font-stream PDF embedded font (sfnt) at offset 0x89B3 2116 bytes
font_02_sfnt_off0000937f.bin
effe7a592aa6c7e6382edfd4a69f857c60c16a87803a5cc31153f2155283e19a
pdf-font-stream PDF embedded font (sfnt) at offset 0x937F 16460 bytes