Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf617013f8a4da27…

MALICIOUS

PDF

38.3 KB Created: 2020-07-29 17:44:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8b3dc027b34c3acbb52f21f4fd09e413 SHA-1: 6387ee8a1c2e0cbe89b6739b24eefcde036d597b SHA-256: cf617013f8a4da27ae6e5ab7db9dbba1625f1d11a2c1978c60c0e6423a2c6eb7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, identified as a 'PDF SEO Link Farm'. One of these links points to a known malicious redirector infrastructure. The document body is largely unreadable binary data, but the presence of numerous external links suggests a malicious intent, possibly for SEO manipulation or to lead users to harmful sites.

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=libertango+accordion+sheet+music+pdf In PDF document text
    • http://files.cubcountry.org/uploads/1/3/1/4/131438392/7344747.pdfIn PDF document text
    • http://files.aspie.com/uploads/1/3/0/7/130775557/zidarudul.pdfIn PDF document text
    • http://files.forestcobbler.co.uk/uploads/1/3/1/0/131069832/038f09a93032.pdfIn PDF document text
    • http://files.triciavanoostveen.com/uploads/1/3/0/7/130740586/3862902.pdfIn PDF document text
    • http://files.pentictonnewcomers.com/uploads/1/3/0/7/130775108/bbd427d5a98f7.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/1/0438/4597/6224/files/voliwuxativasibetaxexej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0093/9164/files/fatilirotamefux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43396058945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9172/0347/files/josesobajunejotonev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/28702980808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9114/0509/files/86600629036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3489/4755/files/36605415592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0898/2165/files/zipujuruliluxetafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/49936654231.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2834/9085/files/36233565881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0845/7877/files/badiranezafadilogux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tokon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5330/8314/files/kedolitonuxis.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 8

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_off000058e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58E0 5500 bytes
SHA-256: d0c4dfd9c8d3cb2d85b68938151235fe1d8dc9fce16ccc910b2f405bd8669812
font_01_sfnt_off00006b5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5C 9384 bytes
SHA-256: e99d61959d4e28228210245f4c1321772af60370edbf438ea918f733d5e1f019

Open this report in the interactive analyzer, or submit your own file for analysis.