Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ace6c48461488ad…

MALICIOUS

PDF

48.3 KB Created: 2020-08-07 10:05:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b943258af417e42867ea607382dea56d SHA-1: b4648694b3c20e343b1531efb732add8c673eb5c SHA-256: 8ace6c48461488ad7ff22589f9422556fea9b6673e6ab80805b4fd6a1d8ea69d
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=bbg+beginner+training+pdf'. The document body, though heavily obfuscated, appears to contain text related to 'bbg beginner training pdf', suggesting a lure. The presence of a large number of external PDF links, many hosted on Shopify, further indicates a link farm or redirection strategy. The ML classifier strongly supports the malicious verdict.

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.cc/pify?keyword=bbg+beginner+training+pdf
    • http://wavix.myroadtoironman.com/uploads/1/3/1/4/131411896/bad014a9.pdf
    • http://files.asoprimatologicacolombiana.org/uploads/1/3/1/4/131437619/newimezew.pdf
    • http://files.jcdesign-lb.com/uploads/1/3/0/7/130776047/246244.pdf
    • http://limominer.thomasganzevoort.com/uploads/1/3/0/8/130874474/bonujomekutew.pdf
    • http://wovutuza.johnpconoverphotography.com/uploads/1/3/0/7/130739704/2a056d070b4d.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lagikemirulufuwetore.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5236/files/40766413818.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6141/files/relujuzezemovuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/4659/1903/files/equidad_de_genero_libro.pdf
    • https://cdn.shopify.com/s/files/1/0434/5944/4889/files/vutodadudezilekoliz.pdf
    • https://cdn.shopify.com/s/files/1/0436/2331/7662/files/babimokuxowexapow.pdf
    • https://cdn.shopify.com/s/files/1/0433/9957/7756/files/idiomatic_language.pdf
    • https://cdn.shopify.com/s/files/1/0433/7732/8278/files/ielts_general_speaking_practice_test.pdf
    • https://cdn.shopify.com/s/files/1/0431/0836/8545/files/sabriel_old_kingdom_book_1.pdf
    • https://cdn.shopify.com/s/files/1/0432/7813/9556/files/dolik.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32773531818.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/28775457572.pdf
    • https://cdn.shopify.com/s/files/1/0437/1460/9303/files/48923847758.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073a5.bin
cbb52481ce94e16f1aa7c1e5556943e0858c32639ae52c58d7d3596933ba349e
pdf-font-stream PDF embedded font (sfnt) at offset 0x73A5 3016 bytes
font_01_sfnt_off00007e61.bin
3f6e96273a5faf3153ad2c95123bd28be47a648d1e15a6ef44541f4c23a955bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E61 5188 bytes
font_02_sfnt_off00009018.bin
88cad550502219f25322962c66c40bbb990ffe6a74e3ec790392620b859f117e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9018 10312 bytes