Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b5f4e507d0f225a…

MALICIOUS

PDF

38.3 KB Created: 2020-08-15 03:44:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 963b9c7c8a0768992f518a13d728e73e SHA-1: 38c87309dddb2ee4e9c9a9bfde02519a71502569 SHA-256: 7b5f4e507d0f225abc5f92f3c8691d82e07f608a17785193c0cd4036a387a554
194 Risk Score

Malware Insights

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

The PDF contains a mass link farm pointing to a malicious redirector, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=ashamed+form+a+sentence' which is a known malicious redirector. This indicates a phishing or malware distribution attempt, likely using a spearphishing attachment as the initial access vector.

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=ashamed+form+a+sentence In PDF document text
    • http://files.mjohnson7.com/uploads/1/3/0/7/130739060/lerisutelizatetel.pdfIn PDF document text
    • http://files.frostbites.net/uploads/1/3/1/3/131382243/1cbb731f37b2d.pdfIn PDF document text
    • http://files.heatingbreakdownservice.com/uploads/1/3/1/1/131163561/bezixuvofemunam_dipevi.pdfIn PDF document text
    • http://files.kickitlivingweekly.com/uploads/1/3/1/8/131871614/tilivalaxazu.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/1/0427/4972/2790/files/zisozolozapulesav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9145/2314/files/62826045438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3775/3501/files/dukijepasoxefud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6811/2550/files/12167557464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8578/3447/files/31672959013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2537/5127/files/zunevetixodizipitisodavaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7373/1741/files/titorolezoronaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/gelonenotifonadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/muatan_dan_medan_listrik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1613/4562/files/zoruzaperovuzamobeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5573/5193/files/naxerejutopez.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_off00005af1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF1 5220 bytes
SHA-256: 7b62f0177c3aebcf26bb707490cac240bc2f757b5e7840e03aad7fb60efd718c
font_01_sfnt_off00006c81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C81 9496 bytes
SHA-256: 89232fa6b9bb88f19126aae41fbcb61bb9d7b2e3701933f562c1feed4a489082

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