Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f9d271b950a82bf…

MALICIOUS

PDF

49.1 KB Created: 2020-08-25 10:21:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 757a874058f65cb83bc0635352efbc69 SHA-1: 5c27fcf3950dd311b063f1030878950b5503d2bf SHA-256: 8f9d271b950a82bf1e058e8e40e292e8222b396ec46be914c3d9e80516dcfce9
120 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 'https://ttraff.ru/pify?keyword=single+man%2527+s+guide+to+vietnam'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily corrupted, contains fragments of the redirector URL and benign-looking document titles, suggesting a lure. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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=single+man%2527+s+guide+to+vietnam
    • http://files.shadowpara.com/uploads/1/3/1/3/131398385/3919427.pdf
    • http://files.canopyarts.net/uploads/1/3/2/6/132681409/4a91e91d5c0e05c.pdf
    • http://files.miss-a-science.com/uploads/1/3/1/3/131379113/jerutaludi_pozevi_nonel_xubanelul.pdf
    • http://files.ildcc.org/uploads/1/3/1/4/131437949/joseta_xarawidevuxila.pdf
    • http://files.moonsiewshutters.com/uploads/1/3/1/4/131453712/1976e97259ca4.pdf
    • https://cdn.shopify.com/s/files/1/0429/8558/6841/files/30817543298.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23582012054.pdf
    • https://cdn.shopify.com/s/files/1/0433/9089/4247/files/hallelujah_salvation_and_glory_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0433/5868/3294/files/beowulf_characters.pdf
    • https://cdn.shopify.com/s/files/1/0434/7897/4616/files/us_city_populations.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/34530012154.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/togofas.pdf
    • https://cdn.shopify.com/s/files/1/0427/5663/6828/files/mudomalifamoteb.pdf
    • https://cdn.shopify.com/s/files/1/0429/4092/4063/files/fovoridapupujogofemutuj.pdf
    • https://cdn.shopify.com/s/files/1/0449/7106/5503/files/algebra_2_textbook_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/4639/5304/files/47225533981.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_off00007922.bin
32ea74c817bf90882bfea37e0d8b8ef7dd2963deec24f48c3e07de8dfa78fd8d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7922 5248 bytes
font_01_sfnt_off00008ae4.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE4 1800 bytes
font_02_sfnt_off00009371.bin
2637623649adebc1c08b5a2627a7e8136ac02acdaee64f595b2936b5da0dbada
pdf-font-stream PDF embedded font (sfnt) at offset 0x9371 10360 bytes