Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f6c647733461b40…

MALICIOUS

PDF

45.3 KB Created: 2020-08-09 08:37:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b867ab376d8482cea0ce0027f8006b39 SHA-1: 2d5eef48db8bc5eb992de6132eb3ad00e430c2ff SHA-256: 7f6c647733461b404b9909af1be9f10b73e24c4e9c332d012710f10be0333167
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary redirector URL, 'https://ttraff.cc/pify?keyword=learn+ruby+programming+language+pdf', is flagged as malicious. This indicates a phishing or scam attempt where users are lured to click on links presented as free downloads, leading them to malicious infrastructure. No scripts were extracted, but the structure suggests a link farm designed for SEO manipulation to distribute malicious content.

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=learn+ruby+programming+language+pdf In PDF document text
    • http://files.fishytushy.net/uploads/1/3/2/8/132814906/6c9dff705.pdfIn PDF document text
    • http://files.renewedreloved.com/uploads/1/3/1/4/131437085/58277453b708a40.pdfIn PDF document text
    • http://files.crazycraftcubby.com/uploads/1/3/2/7/132741385/551906.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/1/0427/5830/8006/files/firozovavalalagilobefera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/11210946603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8564/4447/files/38608032825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9790/6589/files/bivotoximafojogemazal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9073/8328/files/kikegosis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5804/4827/files/byu_independent_study_classes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/historia_del_peru_jorge_basadre.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2388/3688/files/94288219793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6576/1176/files/jibutanojopoxejiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1574/8253/files/pebonuzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1277/6351/files/78625364880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mojarugalemidim.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 4

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_off000072ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72EA 5368 bytes
SHA-256: dc1cccff6edf61a506c966143845a55c2c2df0c0da9ed7ae0c606b41c41e8ae9
font_01_sfnt_off00008525.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8525 10320 bytes
SHA-256: 3f60f924be3d9efdecb06da08b9cad0e0c05a42a5a7b29037f23154156917f95

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