Malicious PDF — malware analysis report

Static analysis result for SHA-256 bad3d81a08a8e431…

MALICIOUS

PDF

57.2 KB Created: 2020-08-11 22:06:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff88f6f3bb874b229e8fbadaf67683f2 SHA-1: 9320bfc06a152c4d9f30449e67ba8ee768a6b77c SHA-256: bad3d81a08a8e43162242eb71d0fa9656da5ce51f59a0742850578d220a76a6a
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=buku+thariqah+alawiyah+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and several benign-looking Shopify URLs, suggesting a lure to download further malicious content or engage in SEO-based spam.

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=buku+thariqah+alawiyah+pdf
    • http://files.darknessisfalling.com/uploads/1/3/1/4/131407977/32babff4.pdf
    • http://files.musicalmastery.org/uploads/1/3/2/8/132814958/dafoduzi.pdf
    • http://files.mybaxterfamily.com/uploads/1/3/1/1/131164375/5d5d353f9.pdf
    • http://files.castlewoodcustomhomes.com/uploads/1/3/2/6/132696500/remabure.pdf
    • http://files.downbeachhockey.com/uploads/1/3/0/7/130776158/4862619.pdf
    • https://cdn.shopify.com/s/files/1/0435/6043/5873/files/rumaxikunexipamobile.pdf
    • https://cdn.shopify.com/s/files/1/0428/0428/1511/files/fidafo.pdf
    • https://cdn.shopify.com/s/files/1/0437/2430/8630/files/79894588653.pdf
    • https://cdn.shopify.com/s/files/1/0438/3752/2085/files/la_bataille_de_la_somme.pdf
    • https://cdn.shopify.com/s/files/1/0434/0793/3603/files/blindfold_chess_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90278046640.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/tedekosivofekovumotip.pdf
    • https://cdn.shopify.com/s/files/1/0434/4479/7600/files/nojifakisipagumo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4352/8609/files/marawojonujiti.pdf
    • https://cdn.shopify.com/s/files/1/0436/3524/5216/files/68553717812.pdf
    • https://cdn.shopify.com/s/files/1/0432/8354/6267/files/sasabuzipatesokemupik.pdf
    • https://cdn.shopify.com/s/files/1/0434/7356/7901/files/46473632194.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_off00007ef3.bin
ed00ee349d0011c7d0d85dfde6a6f236d89d82b8e0efa35e3bf51a1771677f49
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF3 5384 bytes
font_01_sfnt_off0000915e.bin
8c1e4ce220c38a81c9dd4ff6c4f868456fb752860820f10bb1d137b3fba5b3bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x915E 10068 bytes
font_02_sfnt_off0000b413.bin
8917906e50cd1a6ef8165fd2b995029b5a45228a6e7f00cd4b7db5395884e17d
pdf-font-stream PDF embedded font (sfnt) at offset 0xB413 20776 bytes