Malicious PDF — malware analysis report

Static analysis result for SHA-256 815064be6364b967…

MALICIOUS

PDF

45.1 KB Created: 2020-08-13 00:02:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e486a9b13813d217fe87b220cdfdd0e3 SHA-1: 62888d6a7502eb1daef5dddbabb9a906a8e76568 SHA-256: 815064be6364b96736efcec81870d72d7c42459833aede444cd9996eff51ef1c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination of the malicious content. The document body, though heavily obfuscated, contains text related to 'cartoon drawing styles' and includes the malicious URL, suggesting a lure to trick users into clicking. The presence of numerous external PDF links, many pointing to Shopify, indicates a potential SEO link farm used to distribute the malicious PDF.

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=cartoon+drawing+styles+pdf
    • http://naler.dragonmystmals.com/uploads/1/3/0/7/130739140/32b17c65.pdf
    • http://files.birdhousebaby.com/uploads/1/3/0/7/130740522/siniwuluzisu_mazogal.pdf
    • http://wajepomuk.stonefoxfeather.com/uploads/1/3/0/8/130813528/ranofemedez_womer_wigaf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/3124/8542/files/91472020546.pdf
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/honda_eu3000is_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69651331918.pdf
    • https://cdn.shopify.com/s/files/1/0429/2316/3801/files/sotiwixep.pdf
    • https://cdn.shopify.com/s/files/1/0432/9232/8102/files/rovodumazamosegixej.pdf
    • https://cdn.shopify.com/s/files/1/0431/8311/2341/files/34233319123.pdf
    • https://cdn.shopify.com/s/files/1/0431/7505/1415/files/lijapeziluvonu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3791/7335/files/mubelo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0963/8553/files/pizupelij.pdf
    • https://cdn.shopify.com/s/files/1/0431/2665/3077/files/accidental_racist_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0433/7047/9768/files/nirujopetifizoxis.pdf
    • https://cdn.shopify.com/s/files/1/0434/9201/6280/files/after_part_2.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_off00007303.bin
4fa50b8e99316bf477a5cfa5667c7216ecba2e9fd43c97afc947a34c4cc5ef8c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7303 5308 bytes
font_01_sfnt_off0000853a.bin
4f9b1aabe18117e2e84cd92f21b54b4ed4b2c12f109666cabc9021a8e7ccd8c5
pdf-font-stream PDF embedded font (sfnt) at offset 0x853A 9996 bytes