Malicious PDF — malware analysis report

Static analysis result for SHA-256 6852d42bd96ebcab…

MALICIOUS

PDF

46.3 KB Created: 2020-08-14 18:05:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2dc94b2cc6749ba9a13c15653b09da78 SHA-1: 4f01cf3b2f3f72b53a447f610c9995171d2d2735 SHA-256: 6852d42bd96ebcab28c343ab9ac28ed80cd7cd1ff54cb04f4e490192b5fd44a7
162 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.cc/pify?keyword=website+template+mockup+psd', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to website templates and a similar URL, suggesting a lure. The presence of numerous other links, many pointing to Shopify, indicates a link farm strategy, likely to obscure the malicious destination. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=website+template+mockup+psd
    • http://moxugajub.yoursosweetamericandi.co.uk/uploads/1/3/0/8/130874153/sunogi-tuvajelarivoka.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/denikiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/7258/5888/files/outstanding_lateral_thinking_puzzles.pdf
    • https://cdn.shopify.com/s/files/1/0441/3403/9704/files/jitosupajamesetesuxewuguw.pdf
    • https://cdn.shopify.com/s/files/1/0433/9525/2374/files/lituribif.pdf
    • https://cdn.shopify.com/s/files/1/0431/5863/4650/files/soromiwibugemifafuwesozu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6825/1543/files/zonewipumasi.pdf
    • https://cdn.shopify.com/s/files/1/0440/8731/2534/files/parrot_bebop_2_power_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/63616507057.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_off00007754.bin
1e0a1498082764ba9cdf52d35fc9a54559feac0d27e415bad5f597b6054307c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7754 5340 bytes
font_01_sfnt_off0000896c.bin
4b80e3b3eade98df03f36c20fc29c9945c6e3d1fd18b23accf83310f360c1807
pdf-font-stream PDF embedded font (sfnt) at offset 0x896C 10400 bytes