Malicious PDF — malware analysis report

Static analysis result for SHA-256 f08c2bfdc89f7362…

MALICIOUS

PDF

52.4 KB Created: 2020-07-29 17:02:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9793950604dd41c9995f6ef0139cc618 SHA-1: dc7e283a028aecdec8a1735ec52e2d5b11d2b3ca SHA-256: f08c2bfdc89f7362d70540dc60d4d3852b8d70942e3f8193f958b179352ffb0e
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting a link farm for SEO manipulation or to host further malicious content. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves luring users to click on these links, which likely lead to phishing sites or malware downloads.

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=no+sugar+food+list+pdf In PDF document text
    • http://files.youthvoicesandiego.com/uploads/1/3/0/7/130739029/2100000.pdfIn PDF document text
    • http://files.coupadvantageportal.com/uploads/1/3/2/7/132740463/bitipema.pdfIn PDF document text
    • http://files.packmeinursuitcase.com/uploads/1/3/1/6/131606366/d791f3a.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/1/0433/0127/3758/files/72183247402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5702/8001/files/408851528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/bijaxeravuxomifeninek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8733/1481/files/magetikovuboj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9899/5877/files/tupatedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9940/5977/files/74764523998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8037/5704/files/veladazojex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/97217653060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7975/3109/files/12360026093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2733/2252/files/bunavaxutugafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6231/2616/files/62570960842.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
🗂 Part of campaign: coupadvantageportal.com 4 samples

Related samples 7

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000910d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x910D 4836 bytes
SHA-256: d5007505454eb23e6d1cf30003c3de97aa83b67b9535e6597b4350bffb1c4005
font_01_sfnt_off0000a191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA191 10260 bytes
SHA-256: 8e0ae0998a3d402aea2c5aba6a413c1a27f763ec18d37e1c53eb0dced74f1a69

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