Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b0e263e6d174ea8…

MALICIOUS

PDF

45.5 KB Created: 2020-08-17 12:17:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 011f67f4641237eb0aebc3b1d824d259 SHA-1: 35e21c698d03aad2d350664dd9ca3e073a192bf8 SHA-256: 0b0e263e6d174ea897182b8a30e13b94acda655316c38daae168e3caf701479b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ttraff.com, disguised with a keyword related to diet plans. This suggests a phishing or scam attempt to redirect users to malicious content. The document also contains a large number of embedded links, many pointing to Shopify, which is characteristic of SEO link farm abuse for traffic generation or malicious redirection.

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=vegetarian+ketogenic+diet+food+list+pdf
    • http://files.csjmemorialfund.com/uploads/1/3/0/7/130739831/nudesapu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/6662/2101/files/vimaropudokisubopo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1888/7068/files/kijobakulixefawewajejam.pdf
    • https://cdn.shopify.com/s/files/1/0434/1157/0838/files/81288794818.pdf
    • https://cdn.shopify.com/s/files/1/0427/9740/0223/files/watch_sherlock_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/9745/6801/files/xibegamozek.pdf
    • https://cdn.shopify.com/s/files/1/0431/5951/9387/files/xubekazemexunatilafeguru.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xirapekewovefosisukepeja.pdf
    • https://cdn.shopify.com/s/files/1/0428/0877/0726/files/pivot_animator_apk.pdf
    • https://cdn.shopify.com/s/files/1/0429/9037/0975/files/cinderella_and_the_four_knights_songs.pdf
    • https://cdn.shopify.com/s/files/1/0433/6726/8517/files/fumimikivifeviw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9649/0655/files/ramadan_time_table_2020_dubai.pdf
    • https://cdn.shopify.com/s/files/1/0430/1740/4573/files/42915591235.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_off00007421.bin
00a87f104ff5dff049d24d616843a691ec1822087ce13f24e5baaadf06e1e06b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7421 5352 bytes
font_01_sfnt_off0000866a.bin
a44b547d2999181f1531691beed539a48fde07e0daad678be8656f3289a234cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x866A 10212 bytes