Malicious PDF — malware analysis report

Static analysis result for SHA-256 6518f412f81c7681…

MALICIOUS

PDF

43.5 KB Created: 2020-08-06 11:06:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2fc05b502cc490c905f55f970770ba3b SHA-1: 8632c153e85df1b7e8a7a3e01d215f9ff0178892 SHA-256: 6518f412f81c7681e3d5bb72e2947dcd32a22083286e965adca22c58d38d89c2
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that is flagged as malicious. The document body, though obfuscated, contains the same redirector URL and appears to be a lure for downloading a PDF. The ML classifier strongly indicates maliciousness, and the presence of multiple links to redirectors suggests a phishing or scam attempt.

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=greenhouse+gases+pdf In PDF document text
    • http://files.omoroseblessings.com/uploads/1/3/1/8/131856446/zerifiperavoniz-firipaj.pdfIn PDF document text
    • http://files.suzannejensenbleustudio.com/uploads/1/3/1/8/131856247/9edc0e2f99775fd.pdfIn PDF document text
    • http://daripu.acofla.com/uploads/1/3/1/4/131437987/rawip-tipasovovize-nerifinud.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/1/0428/7424/1183/files/93385407029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1639/4648/files/58783491445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6986/6138/files/58531839598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3566/4284/files/automobile_engineering_download_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1826/3464/files/lelevudasiwabur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0266/5892/files/bawelowalubunufixabolal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7571/4715/files/zazusatavonaxuket.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7786/7422/files/37631552450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8837/9032/files/11747548976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7692/0220/files/1555779332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9020/6119/files/54512074243.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 3

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_off00006d40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D40 5304 bytes
SHA-256: 2f42379f27f8abe4a8866da85b6363c0be12f05a75c1dc3c2401b5cc6e88b0eb
font_01_sfnt_off00007f48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F48 10128 bytes
SHA-256: 063e5be878992f41b26f5d70a187022a8acb5a3118d57b7c1960270e328019c0

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