Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc08459a3c3f4aca…

MALICIOUS

PDF

49.8 KB Created: 2020-08-19 22:25:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2b6cae1babfa8e65d1fd736ba11ebba9 SHA-1: 7b3b55ebfc6ea0741f9358f8cb0b1c95f2644416 SHA-256: bc08459a3c3f4aca0b81c6ab0f5b361d4b6dd67233bd5967e65584019cc028c3
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, with numerous links pointing to external PDFs, many hosted on 'cdn.shopify.com'. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be luring users to a malicious site via the embedded redirector.

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.com/pify?keyword=newborn+baby+app+android In PDF document text
    • http://files.cabosuvrentals.com/uploads/1/3/0/7/130739776/sujisa.pdfIn PDF document text
    • http://files.remodelkitchenbathroom.com/uploads/1/3/0/8/130814535/9638127.pdfIn PDF document text
    • http://files.lofasothebosso.com/uploads/1/3/1/3/131398125/jusezidoxo_nozise.pdfIn PDF document text
    • http://files.stlouisfitnesstraining.com/uploads/1/3/0/7/130775795/a463fd2b0a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0457/7224/3110/files/zikifavemevafoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/entrepreneur_books_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/78216512402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5663/5816/files/fesalewopobemudunur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4891/0498/files/gesadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4907/4336/files/sajofirabilawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4828/8934/files/wifavewog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0512/3493/files/41877188073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3573/7764/files/71772677055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7266/7296/files/avolites_quartz.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77CB 4756 bytes
SHA-256: 3fb4d5f48548270ec1cb218d97f84684832adcb66ceb128f5dc4e0b912566174
font_01_sfnt_off000087ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87FF 10524 bytes
SHA-256: 0746892e426dabb13fd1ca0eeab7889e26894df8da8e626c0612f90aebe9c4ec
font_02_sfnt_off0000ac01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC01 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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