Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0dc8561b8213cde…

MALICIOUS

PDF

41.4 KB Created: 2020-08-07 14:43:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bac75ed90068c89f141749906b347fff SHA-1: 3fce0049cb983523514845bc16ecd46ba512b71c SHA-256: f0dc8561b8213cde12749b68c830494f90591652b19f472ac3fa8e6e49ab679f
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The primary malicious URL identified is ttraff.com, which is known to host redirectors. The document body contains garbled text but includes the malicious URL and several benign-looking Shopify URLs, suggesting a lure or SEO poisoning attempt. No scripts were extracted, but the sheer volume of links and the critical heuristic firings strongly indicate a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=cirrose+hep%25C3%25A1tica+complica%25C3%25A7%25C3%25B5es+pdf
    • http://files.cafl212.com/uploads/1/3/1/1/131163723/mulojudefivab.pdf
    • http://files.midwestresourcesolutions.com/uploads/1/3/1/3/131381204/dituxofosete_gikix.pdf
    • http://files.drchensacupuncture.com/uploads/1/3/2/6/132696210/5294451.pdf
    • https://cdn.shopify.com/s/files/1/0429/0379/7913/files/86863659607.pdf
    • https://cdn.shopify.com/s/files/1/0435/5211/2804/files/96571974746.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/bidituxodisu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8542/2997/files/31127307350.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54313135065.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3982/files/aptitude_sample_questions.pdf
    • https://cdn.shopify.com/s/files/1/0437/0736/7592/files/tepowesitafipu.pdf
    • https://cdn.shopify.com/s/files/1/0436/4845/0718/files/david_goggins_can_t_hurt_me_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/tozojodaxabewitoxabumax.pdf
    • https://cdn.shopify.com/s/files/1/0432/5674/2046/files/kikadidufogisezo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7344/5792/files/62935725954.pdf
    • https://cdn.shopify.com/s/files/1/0438/2857/6416/files/ziwuf.pdf
    • https://cdn.shopify.com/s/files/1/0435/6187/7663/files/wegob.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_off00005f60.bin
de74269a318ab152bb0619c567b60dead0418a3c48f52fbdd7a31a1b616225db
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F60 5936 bytes
font_01_sfnt_off00007249.bin
aa348dfff8da920e7693f43d35b5b7133e3adcecd4081ef850f28260703b35bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7249 12076 bytes