Malicious PDF — malware analysis report

Static analysis result for SHA-256 bea97c79827f858f…

MALICIOUS

PDF

46.8 KB Created: 2020-08-09 14:49:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0567d5c2cad3082effa990f0f8c1def4 SHA-1: b9d2c45ccd9c927ff01f6d259f00e564053d594a SHA-256: bea97c79827f858f4979dd503f867f32f5e3ea1838bc1a6ff76c46574ff51113
128 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to benign Shopify URLs, but one critical link redirects to a known malicious domain (ttraff.ru). The document body, though heavily obfuscated, contains text suggesting it is an 'accomplishment report template pdf', likely a lure to encourage clicks on the malicious redirector. The presence of a visual download button further supports a social engineering pretext. The primary malicious IOC is the redirector URL.

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.ru/pify?keyword=accomplishment+report+template+pdf
    • http://files.heartxoutfitters.com/uploads/1/3/1/6/131636855/jadom.pdf
    • http://files.quekc2.com/uploads/1/3/0/7/130739987/2768710.pdf
    • http://files.tjeducationalleader.com/uploads/1/3/2/6/132682441/3175757.pdf
    • https://cdn.shopify.com/s/files/1/0435/7311/7087/files/2481829933.pdf
    • https://cdn.shopify.com/s/files/1/0435/3431/9776/files/piragor.pdf
    • https://cdn.shopify.com/s/files/1/0437/2755/2661/files/srimad_bhagavatam_tamil_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/0629/4176/files/hierarchy_of_needs_by_abraham_maslow.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fexofedome.pdf
    • https://cdn.shopify.com/s/files/1/0433/9043/5493/files/28183919738.pdf
    • https://cdn.shopify.com/s/files/1/0433/4741/1096/files/18469091141.pdf
    • https://cdn.shopify.com/s/files/1/0427/6181/4172/files/71230848195.pdf
    • https://cdn.shopify.com/s/files/1/0434/3798/1852/files/dolutetivudij.pdf
    • https://cdn.shopify.com/s/files/1/0430/6065/8330/files/31896077944.pdf
    • https://cdn.shopify.com/s/files/1/0433/3672/8744/files/siwexum.pdf
    • https://cdn.shopify.com/s/files/1/0439/0689/1931/files/the_old_man_and_the_sea_english_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/5152/4008/files/lagirosufomitefada.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_off00007979.bin
a71a85df1a596adce102ea7edc11dafaccf8d4d79b0dec1b334938badfd5e35e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7979 5384 bytes
font_01_sfnt_off00008b9d.bin
4ac24520c59cc62553abe14f1481d4a42acc4fe89605d701c66e76d005d30b2d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B9D 10096 bytes