Malicious PDF — malware analysis report

Static analysis result for SHA-256 6557514c4c7c2ffe…

MALICIOUS

PDF

42.0 KB Created: 2020-08-04 21:05:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3331b66a4d7a49f98e31593d1772ae3e SHA-1: 30a5fbb764f6fa669f169faf926938eb8af16c6d SHA-256: 6557514c4c7c2ffed1cf31fec041258309fe9dc63731e3e6db0063be68018b0e
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically a redirector at 'ttraff.cc'. The document body, though heavily obfuscated, contains text suggesting a lure related to a 'muscle gain workout plan', which aligns with the SEO link farm heuristic indicating a phishing or scam attempt. The ML classifier also strongly indicated maliciousness.

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=muscle+gain+workout+plan+for+beginners+pdf In PDF document text
    • http://files.booksmiles.org/uploads/1/3/0/8/130814245/zefid.pdfIn PDF document text
    • http://files.herstylez.com/uploads/1/3/1/1/131163969/mubujeb-nenavixokuneza-parokaketeze.pdfIn PDF document text
    • http://files.sussner.info/uploads/1/3/0/9/130969717/tomerudugi.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/1/0432/5254/7739/files/82284151175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2013/2257/files/jirenarur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8984/5671/files/strings_mix_simple_java_solution.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/11801524938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5509/4679/files/walmart_410_shotguns.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1434/9219/files/luzubopefimesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9720/1576/files/56499431249.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2859/4344/files/60630720348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1936/9639/files/alesis_dm_lite_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2745/5382/files/20383366008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3077/files/goliva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/nalef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4334/7877/files/64106486820.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_off000063f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F6 5624 bytes
SHA-256: 59fe7af822665cb23548a12367bbe1765f86a31b3e81867e6da25eebda42cdc3
font_01_sfnt_off00007744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7744 10380 bytes
SHA-256: 471036012613a27ed5fbbc5a41d6b153e45cf78d1f9e0c39000fd6f96cc05ca6

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