Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5d3445e67928117…

MALICIOUS

PDF

47.2 KB Created: 2020-08-23 09:00:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd61e1430b5cc6bff603fbd491d39861 SHA-1: 76b4d580f1185096e273977c9360a1e3563a1435 SHA-256: b5d3445e679281173a2015983ec9c46b964a9e0605e2d4019810c6d0c60e50dc
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of embedded links, indicative of a link farm. The primary malicious URL identified is https://ttraff.com/pify?keyword=cg+dj+syk+tapori+mix+song, which is likely used to redirect users to further malicious content. The document body contains obfuscated text and embedded URLs, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=cg+dj+syk+tapori+mix+song
    • http://lobotu.equityfinancetaxservice.com/uploads/1/3/1/8/131856726/c2340b59f908a.pdf
    • http://files.oilsandairplanes.com/uploads/1/3/2/7/132711999/c3f6254e4736.pdf
    • http://files.spanishstreetfarmacy.com/uploads/1/3/2/6/132695615/1385602.pdf
    • https://cdn.shopify.com/s/files/1/0429/3728/6812/files/canon_in_d_piano_sheet_music_advanced.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zikoraj.pdf
    • https://cdn.shopify.com/s/files/1/0429/7218/4732/files/temozegakekelorolorujudef.pdf
    • https://cdn.shopify.com/s/files/1/0432/8423/4396/files/zijuwulagivaligetabazisot.pdf
    • https://cdn.shopify.com/s/files/1/0428/6991/5814/files/dujavurox.pdf
    • https://cdn.shopify.com/s/files/1/0430/0714/8185/files/zasutoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/6143/5813/files/pemivuxosewusifezun.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/silekizezimepajetidomok.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/peripajalub.pdf
    • https://cdn.shopify.com/s/files/1/0433/5956/8027/files/kilit.pdf
    • https://cdn.shopify.com/s/files/1/0432/7007/8617/files/40425884758.pdf
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/adobe_reader_for_mac_update.pdf
    • https://cdn.shopify.com/s/files/1/0439/2920/6939/files/58572108153.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/culligan_water_softener_parts.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_off00005351.bin
a7d5598c1bb0a548eae29bdd5724063cd0eee53f51a40c08b0fb4af3039fc480
pdf-font-stream PDF embedded font (sfnt) at offset 0x5351 5464 bytes
font_01_sfnt_off000065ec.bin
0ab30398bf01609435423bb182b99dcf08778852e15c9b4d3f1fb5a58638c6e5
pdf-font-stream PDF embedded font (sfnt) at offset 0x65EC 14824 bytes
font_02_sfnt_off000093d1.bin
e052255aecba1bbee3093d0d8c7f3b252848a77f33935a44b925d88351079db9
pdf-font-stream PDF embedded font (sfnt) at offset 0x93D1 7864 bytes