Malicious PDF — malware analysis report

Static analysis result for SHA-256 33c3ab66ba2a61d1…

MALICIOUS

PDF

43.4 KB Created: 2020-08-09 10:58:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b93e453dcd1b97b6368619429c09b27 SHA-1: f877ff3757613bb221a4ecc33e9f9493cbba8118 SHA-256: 33c3ab66ba2a61d1ca3fc07abefa221f2dcbe99499f3ccc47dfd5f8fe8412df6
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'https://ttraff.com/pify?keyword=anglicanism+questions+and+answers+pdf'. The document body, though heavily obfuscated, contains this URL and other Shopify-hosted PDF links, suggesting a link farm or SEO poisoning tactic to distribute malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=anglicanism+questions+and+answers+pdf
    • http://files.clugstonchiropractic.com/uploads/1/3/0/8/130874125/novekuv.pdf
    • http://files.historicalsocietymaleny.com/uploads/1/3/2/6/132680808/e42f2e195e421.pdf
    • http://files.thelionschoice.com/uploads/1/3/1/4/131452959/6732388.pdf
    • http://files.mauemusicstudios.com/uploads/1/3/0/9/130969801/2e05003de5.pdf
    • http://files.fanconorthbay.org/uploads/1/3/2/7/132741322/eaac1ce7a49e.pdf
    • https://cdn.shopify.com/s/files/1/0437/2342/3912/files/remumapakafurexemime.pdf
    • https://cdn.shopify.com/s/files/1/0431/8615/9767/files/rebevexowomemed.pdf
    • https://cdn.shopify.com/s/files/1/0434/0708/1630/files/morfologi_telur_ascaris_lumbricoides.pdf
    • https://cdn.shopify.com/s/files/1/0429/4865/7318/files/21481139829.pdf
    • https://cdn.shopify.com/s/files/1/0429/4787/0876/files/24408780832.pdf
    • https://cdn.shopify.com/s/files/1/0432/0998/2107/files/xixivexokapakoralon.pdf
    • https://cdn.shopify.com/s/files/1/0431/7095/5415/files/82726717632.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zenafepejeviwasi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0301/0468/files/67676083346.pdf
    • https://cdn.shopify.com/s/files/1/0428/5526/8519/files/4590768220.pdf
    • https://cdn.shopify.com/s/files/1/0430/5505/5002/files/vunivuzoridewagalixed.pdf
    • https://cdn.shopify.com/s/files/1/0435/6653/0719/files/90396629022.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006980.bin
dcc797cfb9f371167b515ca3939c2f2c37d63a29014b34ef801f0f8a420d2f05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6980 5684 bytes
font_01_sfnt_off00007ccf.bin
84d7313817a22406450cedfdb76dc58a4a39176f8714e66e2d2c71206fc67450		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCF 10444 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.