Malicious PDF — malware analysis report

Static analysis result for SHA-256 532760d7808684c4…

MALICIOUS

PDF

102.1 KB Created: 2020-09-03 16:27:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc0ddc0e0de56e9d550ddbcab3b03299 SHA-1: ecca82b18bbe7c3cdbd1c19981300922ee67d0ce SHA-256: 532760d7808684c4fc589278e6f2ccea98d98afa6de9f71a9c55ee9f6e644f64
150 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.cc'. This URL is embedded within the document body, which is presented as a corporate annual report to lure victims. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, suggesting an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=united+technologies+corporation+annual+report+2017
    • https://cdn.shopify.com/s/files/1/0440/2626/5765/files/23113272904.pdf
    • https://cdn.shopify.com/s/files/1/0430/9952/1181/files/organic_chemistry_solomons_12th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5805/files/xelekevaxaxaxu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3038/8642/files/black_s_law_dictionary_tenth_edition.pdf
    • https://cdn.shopify.com/s/files/1/0462/0058/6398/files/fodajidiguweziwen.pdf
    • https://cdn.shopify.com/s/files/1/0437/0160/0411/files/dj_bass_songs_free_naa_songs.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/55609580654.pdf
    • https://cdn.shopify.com/s/files/1/0461/7273/3603/files/frontline_commando_offline_game.pdf
    • https://cdn.shopify.com/s/files/1/0437/5596/2522/files/hey_raam_hey_ram.pdf
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/best_automatic_call_recorder_app_android.pdf
    • https://cdn.shopify.com/s/files/1/0431/1675/7153/files/20771617857.pdf
    • https://cdn.shopify.com/s/files/1/0432/3157/6226/files/candy_terry_southern_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/vekonawebigivafanixam.pdf
    • https://static.usrfiles.com/ugd/314c35_fe6529a81e324cc49daa200b663e9153.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_dc7f33429daf4bb2ada8f5cb2d5f72f4.pdf
    • https://static.usrfiles.com/ugd/33a2e4_9528b2a2868141fba1b5ecc02ececc44.pdf
    • https://static.usrfiles.com/ugd/b8c837_7a45e558f3324f9fa88b2b70a111708f.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014187.bin
fdff26d77401d121416f2d3622419e9f7e64f9deb9dde303ea8c6e862b4d5c0a
pdf-font-stream PDF embedded font (sfnt) at offset 0x14187 5732 bytes
font_01_sfnt_off00015512.bin
1bb4b77815978d7a518d90d8df3b31d0d10e7217522d002454329b6b412ab9f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x15512 17544 bytes