Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e7af8aee56ff9f…

MALICIOUS

PDF

46.1 KB Created: 2020-08-29 23:20:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f7f48c275de02602087f7919b1eb6e54 SHA-1: ebea67961e0eb969230ef57adc051295c931537e SHA-256: 00e7af8aee56ff9f0ae5e5bc51aee641720fec99c16c79324c392e8608b0a63d
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDF files, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains a reference to the same malicious URL, reinforcing its role in the attack.

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.cc/wix?keyword=sony+alpha+slt+a57
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/0062/6341/files/ruwexusedowififalupag.pdf
    • https://cdn.shopify.com/s/files/1/0437/3993/8970/files/71067427712.pdf
    • https://cdn.shopify.com/s/files/1/0437/5812/5207/files/basics_of_c_programming.pdf
    • https://cdn.shopify.com/s/files/1/0433/0697/5382/files/jolelixoguzusuwalu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8579/0365/files/fortnite_template_for_cake.pdf
    • https://cdn.shopify.com/s/files/1/0431/4054/6714/files/headway_beginners_workbook.pdf
    • https://cdn.shopify.com/s/files/1/0436/1981/1490/files/modernidade_perifrica_beatriz_sarlo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8716/7645/files/1733129711.pdf
    • https://cdn.shopify.com/s/files/1/0449/0277/6999/files/cairns_tv_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5275/files/vifuzoxobivu.pdf
    • https://cdn.shopify.com/s/files/1/0428/4373/4182/files/myers_cavatina_guitar_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0435/1400/3610/files/can_t_verify_billing_information_itunes.pdf
    • https://cdn.shopify.com/s/files/1/0434/2707/0104/files/30417023380.pdf
    • https://cdn.shopify.com/s/files/1/0465/3803/1254/files/kusexuwud.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000749e.bin
81dbda2d21a8410e2b87713336b8b1b83bacd0dda811cc387f637cb27ded00a4
pdf-font-stream PDF embedded font (sfnt) at offset 0x749E 5220 bytes
font_01_sfnt_off00008666.bin
db59003aec9b4fd93ef4f6bc425057b3b6e59174677e597de61e94a5c06f42f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x8666 11328 bytes