Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f27098616488e08…

MALICIOUS

PDF

55.6 KB Created: 2020-08-04 16:10:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7b7a502a3c40454eb53bdd3f42381a51 SHA-1: 5c1c46499ce20c6faeee502c7d40775430a7da21 SHA-256: 5f27098616488e08ad3e31fde08c233c9b1bd0697ce2949ab030071ab154e7fe
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a link farm designed for SEO manipulation. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector found in the heuristics. This suggests the primary goal is to redirect the user to a malicious site, likely for phishing or malware distribution.

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.ru/pify?keyword=principales+carreteras+de+mexico+pdf In PDF document text
    • http://files.josettecarroll.com/uploads/1/3/0/7/130775888/1954665.pdfIn PDF document text
    • http://misuxenev.xcores.org/uploads/1/3/0/8/130813866/3028738.pdfIn PDF document text
    • http://files.detroitmusiclive.com/uploads/1/3/0/8/130813357/395578ce51089ad.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/1/0428/5290/9212/files/asus_merlin_forum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0609/8597/files/ramuvanefonajokamozudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0326/3650/files/21883999979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2893/7880/files/28685884157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8850/2174/files/nevepojomupakuwarus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8637/9160/files/gudepujusopejozedikufonax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8460/1758/files/gosizulukujad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4097/1674/files/nanuxoxozalaturufenowen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51191810805.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7159/4911/files/2482013675.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 2

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_off000099c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99C7 5372 bytes
SHA-256: 083a2d8ca4574c8546d7e13b9be6e571f4f7fc2ce12dde7d3f89678db9f31a51
font_01_sfnt_off0000abf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABF8 10992 bytes
SHA-256: a76ac9ec37e26b4a844582a6c1adb24835f7a8f8857c6aa37ad46285f3a31351

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