Malicious PDF — malware analysis report

Static analysis result for SHA-256 586c6b2d45933475…

MALICIOUS

PDF

47.7 KB Created: 2020-08-21 22:28:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e15567dda0c6dc437fcc35d7982922d5 SHA-1: 5b0e12671bd7a5a901a8b5cb2fbba984c73693c5 SHA-256: 586c6b2d45933475d6751393940e37173b96987f793e688b8c6efc03e3a5949d
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lure users to malicious content. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also hosts a large number of external links, many pointing to Shopify domains, which is characteristic of a link farm used to obscure malicious destinations. No scripts were extracted, limiting the analysis of direct execution capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=angular+6+format+number+2+decimal
    • http://fufabenav.amorim-neuropsychologue.fr/uploads/1/3/1/3/131383483/mebujabifixag.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/gujofaremanejipoketesi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/dobazutaxebab.pdf
    • https://cdn.shopify.com/s/files/1/0428/8099/1395/files/canon_in_d_piano_sheet_music_free_printable.pdf
    • https://cdn.shopify.com/s/files/1/0437/1149/6343/files/23198021534.pdf
    • https://cdn.shopify.com/s/files/1/0431/2363/8426/files/pesaran.pdf
    • https://cdn.shopify.com/s/files/1/0432/9478/5694/files/5972581117.pdf
    • https://cdn.shopify.com/s/files/1/0437/6533/4165/files/fugegonunote.pdf
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/xatepuze.pdf
    • https://cdn.shopify.com/s/files/1/0433/4164/3928/files/nitarifax.pdf
    • https://cdn.shopify.com/s/files/1/0432/1322/6152/files/39656395210.pdf
    • https://cdn.shopify.com/s/files/1/0446/6160/4505/files/pa_driving_manual.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_off000062cf.bin
24b4143768538e4d997043f4c6646b51fbdab27d25d6cd9e5fa9c767be264939
pdf-font-stream PDF embedded font (sfnt) at offset 0x62CF 5576 bytes
font_01_sfnt_off000075b0.bin
7263bb8096bd3735f6d27a0bcdb5b75ae747192791678aa21071d372fd855af8
pdf-font-stream PDF embedded font (sfnt) at offset 0x75B0 11332 bytes
font_02_sfnt_off00009cc2.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CC2 16164 bytes