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) First seen: 2026-05-09
MD5: b943258af417e42867ea607382dea56d SHA-1: b4648694b3c20e343b1531efb732add8c673eb5c SHA-256: 8ace6c48461488ad7ff22589f9422556fea9b6673e6ab80805b4fd6a1d8ea69d
194 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 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.cc/pify?keyword=bbg+beginner+training+pdf In PDF document text
    • http://wavix.myroadtoironman.com/uploads/1/3/1/4/131411896/bad014a9.pdfIn PDF document text
    • http://files.asoprimatologicacolombiana.org/uploads/1/3/1/4/131437619/newimezew.pdfIn PDF document text
    • http://files.jcdesign-lb.com/uploads/1/3/0/7/130776047/246244.pdfIn PDF document text
    • http://limominer.thomasganzevoort.com/uploads/1/3/0/8/130874474/bonujomekutew.pdfIn PDF document text
    • http://wovutuza.johnpconoverphotography.com/uploads/1/3/0/7/130739704/2a056d070b4d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lagikemirulufuwetore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7027/5236/files/40766413818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6986/6141/files/relujuzezemovuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4659/1903/files/equidad_de_genero_libro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5944/4889/files/vutodadudezilekoliz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2331/7662/files/babimokuxowexapow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9957/7756/files/idiomatic_language.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7732/8278/files/ielts_general_speaking_practice_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0836/8545/files/sabriel_old_kingdom_book_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7813/9556/files/dolik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32773531818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/28775457572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1460/9303/files/48923847758.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73A5 3016 bytes
SHA-256: cbb52481ce94e16f1aa7c1e5556943e0858c32639ae52c58d7d3596933ba349e
font_01_sfnt_off00007e61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E61 5188 bytes
SHA-256: 3f6e96273a5faf3153ad2c95123bd28be47a648d1e15a6ef44541f4c23a955bf
font_02_sfnt_off00009018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9018 10312 bytes
SHA-256: 88cad550502219f25322962c66c40bbb990ffe6a74e3ec790392620b859f117e