Malicious PDF — malware analysis report

Static analysis result for SHA-256 d86cc8d8d1ec7470…

MALICIOUS

PDF

46.9 KB Created: 2020-08-11 05:09:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e9a6d5c58ce85ce4f20e9b1e94288ba SHA-1: 76ec79b7695c8a1df1cb0291857230c7a88b4c92 SHA-256: d86cc8d8d1ec7470e03eaf7cb2a30bf80e35378bbc8c0f0d977d92ce4e901de0
120 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 Shopify domains hosting other PDFs. One critical heuristic indicates that the document links to a known malicious redirector at 'https://ttraff.ru/pify?keyword=asfixia+neonatal+2020+pdf'. This suggests the document is designed to lead users to malicious sites, likely for phishing or malware distribution.

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=asfixia+neonatal+2020+pdf
    • http://files.rootdown-riseup.org/uploads/1/3/1/8/131871705/memuporutowul_mapabileduf_gexuse_bulapowenolovor.pdf
    • http://files.ysgolcybi.com/uploads/1/3/1/6/131606407/0f7fe.pdf
    • http://files.phytocapital.com/uploads/1/3/1/4/131407102/0ab0c36.pdf
    • https://cdn.shopify.com/s/files/1/0436/9547/2794/files/convert_html_file_to_linux.pdf
    • https://cdn.shopify.com/s/files/1/0433/9151/6828/files/jekojazevabuvim.pdf
    • https://cdn.shopify.com/s/files/1/0434/1268/4967/files/dipibagidinuve.pdf
    • https://cdn.shopify.com/s/files/1/0437/3980/7893/files/6142953950.pdf
    • https://cdn.shopify.com/s/files/1/0429/2447/4531/files/60743739373.pdf
    • https://cdn.shopify.com/s/files/1/0431/2721/0144/files/depreciation_accounting_journal_entries.pdf
    • https://cdn.shopify.com/s/files/1/0430/5593/9733/files/57542485303.pdf
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/49773321554.pdf
    • https://cdn.shopify.com/s/files/1/0439/9644/6878/files/glee_seasons_4_episode_1.pdf
    • https://cdn.shopify.com/s/files/1/0449/4766/9160/files/massey_harris_44.pdf
    • https://cdn.shopify.com/s/files/1/0443/4133/0076/files/black_ops_2_steam_key_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/8318/5819/files/basic_classical_guitar_method_book_1.pdf
    • https://cdn.shopify.com/s/files/1/0429/0668/1497/files/48837771822.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_off000063c6.bin
d6cf89bea868715cf7e6f285cd1419009e124338149e1c03d9ffd75cf40315e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x63C6 5268 bytes
font_01_sfnt_off000075c2.bin
9e4e1674d49afdced6d0db3c607379c153595bf318153bcc9f4326ed46e5a5ef
pdf-font-stream PDF embedded font (sfnt) at offset 0x75C2 10384 bytes
font_02_sfnt_off00009987.bin
532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9987 16204 bytes