Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9adef5b662e7da7…

MALICIOUS

PDF

93.4 KB Created: 2020-08-15 04:27:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 922f251b725679beca310dc83ee7bafb SHA-1: 8e42c9a613efff827273fdb454c9397e86777b6d SHA-256: b9adef5b662e7da701c49d5635135481a1b6fcf4ec646103b352377aac48a6ef
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to 'https://ttraff.ru/pify?keyword=disulfide+bond+formation+protein+dsba'. This URL is embedded within the document body, suggesting an attempt to trick users into visiting a malicious site under the guise of a document related to protein disulfide bonds. The file also exhibits characteristics of a link farm, with numerous external PDF links.

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=disulfide+bond+formation+protein+dsba
    • http://nemalinos.francisweller.net/uploads/1/3/1/4/131454526/jenoj_gozifexisomo_samusol_vimaxarufes.pdf
    • http://kelike.northwestchurchofchristchicago.org/uploads/1/3/1/6/131606027/9666beccbe1b28b.pdf
    • http://files.oa-involve-agewell.ca/uploads/1/3/2/8/132814898/wurofojuzidati-katesemogaxute-kesibiri.pdf
    • http://files.fourarrows-ranch.com/uploads/1/3/2/6/132680860/mirenomifiketurokat.pdf
    • https://cdn.shopify.com/s/files/1/0436/3537/6281/files/11857904356.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4434/files/54333617230.pdf
    • https://cdn.shopify.com/s/files/1/0430/9552/3485/files/la_importancia_del_bautismo_en_agua.pdf
    • https://cdn.shopify.com/s/files/1/0439/0833/3736/files/kennen_aram_build.pdf
    • https://cdn.shopify.com/s/files/1/0437/7647/5290/files/arduino_led_display_projects.pdf
    • https://cdn.shopify.com/s/files/1/0437/8784/5790/files/sujefokokusasupomusez.pdf
    • https://cdn.shopify.com/s/files/1/0429/1559/4399/files/nusoxawikokupoloxu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8581/6218/files/xijumawibarukasunowezal.pdf
    • https://cdn.shopify.com/s/files/1/0436/2931/4206/files/fundamentals_of_computer_systems_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/37075665518.pdf
    • https://cdn.shopify.com/s/files/1/0431/4261/1095/files/acoustic_guitar_chords_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kevimofurerofujasopam.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58829080427.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_off0001315d.bin
9e9c9f757738a36fd1602c3b3abfc321377ffce4d528ccf9c6f5f959d269c543
pdf-font-stream PDF embedded font (sfnt) at offset 0x1315D 5324 bytes
font_01_sfnt_off0001434d.bin
83d5dbe1d5eae31bfd337ecb29abfe27c8adfccd023cffdbb922fe18a2126945
pdf-font-stream PDF embedded font (sfnt) at offset 0x1434D 10712 bytes