Malicious PDF — malware analysis report

Static analysis result for SHA-256 46fae402ca2a9290…

MALICIOUS

PDF

42.8 KB Created: 2020-08-19 00:19:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 628793b87b7a8512108e33c34f2a6927 SHA-1: 58ded2c29196a376609f9da7c564ce63a11e3c1a SHA-256: 46fae402ca2a9290872b9d78036cc8b7789601390533d3f9aa83bdc0e70031bf
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the link at https://ttraff.ru/pify?keyword=english+grammar+articles+examples+pdf leads to known malicious infrastructure. Additionally, the 'PDF_SEO_LINK_FARM' heuristic suggests the document is designed to host numerous external links, likely to distribute malicious content or engage in SEO abuse. The document body contains obfuscated text and references to the redirector URL, reinforcing the malicious intent.

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=english+grammar+articles+examples+pdf
    • http://fapudug.anngenuity.com/uploads/1/3/2/6/132681670/dilolofu-benalivosefi-rufuruvozan-xekinimukajilap.pdf
    • http://files.mndeathcollaborative.com/uploads/1/3/1/4/131411147/biregowa.pdf
    • http://files.jennamatlin.com/uploads/1/3/1/0/131071114/ginadude.pdf
    • http://files.solanocanyon.org/uploads/1/3/1/0/131070246/6552027.pdf
    • https://cdn.shopify.com/s/files/1/0438/9833/9496/files/qigong_breathing_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0436/4389/5958/files/10002550625.pdf
    • https://cdn.shopify.com/s/files/1/0429/2699/7663/files/hallelujah_chorus_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/9345/1159/files/sudemafebikigodam.pdf
    • https://cdn.shopify.com/s/files/1/0433/3279/6574/files/jetevalipoteworogoxoxerum.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/zagamebesuvuba.pdf
    • https://cdn.shopify.com/s/files/1/0444/4625/3222/files/81542867211.pdf
    • https://cdn.shopify.com/s/files/1/0436/7453/4041/files/edema_cerebral_tratamiento.pdf
    • https://cdn.shopify.com/s/files/1/0430/9529/4109/files/escala_cromatica_clarinete.pdf
    • https://cdn.shopify.com/s/files/1/0428/7964/7900/files/33137100529.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_off000068b3.bin
629901074adbf76f50540fee9c6d3ebf6814ef40d49603b134d63c60fa0001b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68B3 5596 bytes
font_01_sfnt_off00007b8b.bin
2f8aa1d378329fa14cba0cf8a378eee5b15245dbdef09cbe6e521bc98441f431		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8B 10216 bytes

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