Malicious PDF — malware analysis report

Static analysis result for SHA-256 094c8c316bd1a763…

MALICIOUS

PDF

34.8 KB Created: 2020-08-06 17:14:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e6622d27cca1e57f7be64fd7aebe20e9 SHA-1: 73ca572f294f74e532642f50e04057c1e4df3d52 SHA-256: 094c8c316bd1a763efc4ccf4002ae26b21c7d4a2f063dead85f2c22324435175
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service that is flagged as malicious. The document body and heuristics indicate a lure for free downloads, likely leading to phishing or malware. 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=isometric+drawing+exercises+with+solutions+pdf In PDF document text
    • http://files.anaturalselectiongsd.com/uploads/1/3/0/7/130775286/mimesiwami-lamatan-tuvimananiz.pdfIn PDF document text
    • http://files.southshorecruisingclub.com/uploads/1/3/1/4/131453902/bofunevaze.pdfIn PDF document text
    • http://ratap.grazinggreynacres.com/uploads/1/3/1/3/131379362/ruxijepabus.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/1/0430/1560/2337/files/siriramaxirosamuxufav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1627/3563/files/dumurusawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65105912314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2240/8087/files/pdf_on_kindle_paperwhite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6227/1898/files/botevirozixulapige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6676/9054/files/21241882276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3893/1109/files/14093907063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9952/1181/files/nisemupuxilupefedokakawu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/7741762009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/65656683632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3893/3146/files/7125314662.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 5

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_off000048f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48F5 5664 bytes
SHA-256: 4d36939695b7148eb09e1597da069ebefaca3e614eeb32ca826d5d8f90f38cbc
font_01_sfnt_off00005c26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C26 10108 bytes
SHA-256: bfe0a209cc9a1755da8e30f956d717f3bcaf7ed851be4e2098107f10f0443df0

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