Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a17860062c35ace…

MALICIOUS

PDF

33.9 KB Created: 2020-08-08 04:30:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5253b3aa3d6e70fb6ada02d8dcacc56a SHA-1: 9e7999f09f0824e24193314460f4af11b2187f93 SHA-256: 9a17860062c35ace6e57ba11c0987f2be743f5cad623ef976e6cad49ab680d5f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, https://ttraff.ru/pify?keyword=guide+nutrition+sportive+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other benign-looking PDF links, suggesting a social engineering tactic to drive traffic to malicious infrastructure. The file's purpose appears to be to redirect users to potentially harmful content through a deceptive link farm.

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=guide+nutrition+sportive+pdf
    • http://files.newcloudvape.com/uploads/1/3/2/7/132712530/746ba0746db4.pdf
    • http://files.clickingcanvases.com/uploads/1/3/0/9/130969624/1141644.pdf
    • http://wotuwobe.majanoart.org/uploads/1/3/1/4/131406286/nasunugagowipexi.pdf
    • http://files.ndcca2016.com/uploads/1/3/2/7/132712163/sesepo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8371/0117/files/farilugudaresajufo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5481/6665/files/minecraft_spawn_distance.pdf
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/93711608917.pdf
    • https://cdn.shopify.com/s/files/1/0433/8316/0983/files/isley_brothers_songs_list.pdf
    • https://cdn.shopify.com/s/files/1/0429/3741/7891/files/69879046378.pdf
    • https://cdn.shopify.com/s/files/1/0434/2651/3048/files/97890470894.pdf
    • https://cdn.shopify.com/s/files/1/0434/2333/4565/files/65876817711.pdf
    • https://cdn.shopify.com/s/files/1/0428/1955/1388/files/piduviki.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/peposorutap.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/resistencia_bacteriana_que_es.pdf
    • https://cdn.shopify.com/s/files/1/0437/4865/5265/files/fobajulizeroturukif.pdf
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/how_to_uninstall_xbox_games_on_pc.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_off00004a3a.bin
c985e1e5c17dfdf310047bd9e2976e8093adbdac17cde8d51cdfe1102666e383		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A3A 4884 bytes
font_01_sfnt_off00005af4.bin
0fb83c78dd2f6908335aef28485f88ef8179f2c989e7a1ff8f5ef157f72731d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF4 9348 bytes

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