Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6524aeb66e15982…

MALICIOUS

PDF

43.4 KB Created: 2020-08-06 20:59:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9439b01567f7f2bd9db9ee792285a38e SHA-1: 30d2f8838a23472bed9a7b9213e264fbe6286147 SHA-256: c6524aeb66e1598212cb1c56e60363a78d6a8d5add448d391aa6d9f9ac7d61f6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and text suggesting a lure related to joining PDF files. The presence of numerous external links, many hosted on Shopify, further indicates a link farm or redirection strategy. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link within the PDF.

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=joindre+2+fichier+pdf+ensemble
    • http://files.oasweet.com/uploads/1/3/0/8/130813829/jujogafewokif_zevet_tabuseje_ruvider.pdf
    • http://files.rscds-stirling.org/uploads/1/3/2/6/132695493/9666657.pdf
    • http://files.holmescreekbc.com/uploads/1/3/1/3/131384081/wiramigazexon_voropizoza_wovawepazexev_xojikow.pdf
    • https://cdn.shopify.com/s/files/1/0429/5265/5004/files/ad_d_monster_manual_2.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/65439774558.pdf
    • https://cdn.shopify.com/s/files/1/0433/6910/3528/files/93867769747.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94260126358.pdf
    • https://cdn.shopify.com/s/files/1/0434/0567/2597/files/canine_distemper_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/pedezivikexuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/19031231820.pdf
    • https://cdn.shopify.com/s/files/1/0434/8251/3570/files/escape_games_24.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sutapazuvonovojikujabera.pdf
    • https://cdn.shopify.com/s/files/1/0429/4469/2383/files/xogojesikebiteboxafefive.pdf
    • https://cdn.shopify.com/s/files/1/0438/0337/7824/files/classes_of_organic_compounds_and_functional_groups.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_off00005d14.bin
60d0b91942e456dd4a05b8a1bda16dc321a67eb4ecd13878b7c6ae959fa82833
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D14 5156 bytes
font_01_sfnt_off00006e59.bin
a278b4e7d88910d8a970a4b3854d848722dc12a1af60b2260de30c451daa7dec
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E59 11596 bytes
font_02_sfnt_off00009284.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0x9284 4324 bytes