Malicious PDF — malware analysis report

Static analysis result for SHA-256 69b29c93a9c4f8a7…

MALICIOUS

PDF

42.7 KB Created: 2020-09-09 11:25:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2885113a1f1f9cca28fd354d158556a2 SHA-1: 6d001d7dfa7246c27cd69e4f43bfe878f178be62 SHA-256: 69b29c93a9c4f8a7f20952a806011087cd1d781fc9f2ff8cd845b80d2b006c16
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.me/pify?keyword=counter+terrorism+in+kenya+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to trick the user into visiting a malicious site. The presence of numerous other PDF links further indicates a link farm or SEO poisoning attempt, likely to obscure the malicious intent.

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.me/pify?keyword=counter+terrorism+in+kenya+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0447/9657/5904/files/blomberg_built_under_double_oven_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/6285/2773/files/ferumotatosoneretif.pdf
    • https://cdn.shopify.com/s/files/1/0430/7743/5556/files/92786513301.pdf
    • https://cdn.shopify.com/s/files/1/0437/0454/9531/files/55802539567.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/79919588296.pdf
    • https://static.usrfiles.com/ugd/1cc7e8_4aa26ffa66894dd1864ffd7377a1c78b.pdf
    • https://static.usrfiles.com/ugd/0cd019_b34be82efb984a6398d6770b145ed94f.pdf
    • https://static.usrfiles.com/ugd/96bf9d_0bbaa29a8a554bd694dc3074d3f59e9c.pdf
    • https://cdn.shopify.com/s/files/1/0435/4254/4533/files/pabevogen.pdf
    • https://cdn.shopify.com/s/files/1/0454/4416/9878/files/breathing_underwater_alex_flinn_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/34439496138.pdf
    • https://cdn.shopify.com/s/files/1/0439/2743/7467/files/pawokiduvusibo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6660/5211/files/zimurivozejawosujoxipa.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_off00006a8a.bin
b5c8b3915ce547c18b465c0fd04bd8b2ad0772bba1ba5eb34593032ac062bdbb
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A8A 5228 bytes
font_01_sfnt_off00007c43.bin
1cc7d8c85677b8e039fe8dce215a12c24af9f069c62917f61203ee9e114da667
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C43 9908 bytes