Malicious PDF — malware analysis report

Static analysis result for SHA-256 e245e6c3e8d687b0…

MALICIOUS

PDF

42.8 KB Created: 2020-08-22 18:26:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51f93fafc17aae3fd6afaed90feccfe2 SHA-1: 17b95fcfdd4c10680ae2ced8e567f1b53e06fab1 SHA-256: e245e6c3e8d687b001f5a614b791a761b00b56ea5e00525969afac1f165176be
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=auto+tune+5++free'. This indicates the document's primary purpose is to redirect users to potentially harmful content. Additionally, a PDF link farm heuristic was triggered, suggesting the document is part of a larger SEO manipulation effort to distribute malicious links. The document body contains obfuscated text and the malicious URL, reinforcing the redirection attack pattern.

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.cc/pify?keyword=auto+tune+5++free
    • http://files.spanishfluencyacademyforyoungsters.com/uploads/1/3/0/8/130814575/gapil.pdf
    • http://files.therandytravisfoundation.org/uploads/1/3/2/7/132740485/guvik_tijokoko.pdf
    • http://files.perryic.org/uploads/1/3/1/4/131482886/2297249.pdf
    • http://files.absolutesounddj.com/uploads/1/3/0/7/130739204/guzirofugovo.pdf
    • http://newab.imbusysoareyou.com/uploads/1/3/1/1/131164439/pezazajuteferun-vuvekivez-rusudelami.pdf
    • https://cdn.shopify.com/s/files/1/0428/4828/8934/files/hot_dip_galvanised_steel_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/5289/1298/files/fexivugonakiv.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/the_silent_age_walkthrough.pdf
    • https://cdn.shopify.com/s/files/1/0435/8940/2783/files/bestiario_libro.pdf
    • https://cdn.shopify.com/s/files/1/0430/9843/9837/files/jesabekopim.pdf
    • https://cdn.shopify.com/s/files/1/0435/3009/2712/files/add_blank_page_online.pdf
    • https://cdn.shopify.com/s/files/1/0433/0723/7531/files/abcd_2_hd_video_pagal_world._com.pdf
    • https://cdn.shopify.com/s/files/1/0434/1995/9463/files/tesis_de_la_carrera_de_administracion_de_empresas.pdf
    • https://cdn.shopify.com/s/files/1/0431/5466/9729/files/75977569247.pdf
    • https://cdn.shopify.com/s/files/1/0429/3420/6631/files/xivusigej.pdf
    • https://cdn.shopify.com/s/files/1/0438/0858/7933/files/tevuxitapul.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_off00006b93.bin
f06d762185e70b0ab2309ceb734902f8c3b6d70e83ba4c7255f90d7d956c472b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B93 4452 bytes
font_01_sfnt_off00007acf.bin
efc2d52a2d0479fb49b7732deea7523fec5374a05b119a9699fe8215278104b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7ACF 10512 bytes