Malicious PDF — malware analysis report

Static analysis result for SHA-256 7786b53613b48ad4…

MALICIOUS

PDF

51.4 KB Created: 2020-08-12 19:38:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9a5ca5a7c5915356fd7ce63252f3f77e SHA-1: 37bf7b5460605155c5f5ef2a69e817aeb5a1219d SHA-256: 7786b53613b48ad447aef0a28684a3f1dc824ba3660a5bfbfe28b046510f8a36
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the PDF is designed to redirect users to malicious infrastructure, likely for phishing or to download further malware.

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.ru/pify?keyword=alagaupu+faasamoa+pdf In PDF document text
    • http://files.placescultures.com/uploads/1/3/2/7/132740614/sabixesilaliwuz.pdfIn PDF document text
    • http://files.alexstudio.bg/uploads/1/3/1/1/131164448/875fbb5e4c12d5.pdfIn PDF document text
    • http://files.elizabethkpetersonlab.com/uploads/1/3/1/3/131384789/sibufajoj-xuvini.pdfIn PDF document text
    • http://fafixijix.wearecommunityfirst.org/uploads/1/3/0/9/130969130/vodozowavigo.pdfIn PDF document text
    • http://files.mahajosh.com/uploads/1/3/1/4/131453456/ravixokugiguwom_womutezenufino.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/1/0434/8048/1954/files/search_engine_marketing_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6108/4322/files/crazy_frog_piano_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tedogunugovosilogupex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8782/6854/files/worldview_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/sewota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0058/5625/files/23612395232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0459/1254/files/42151675119.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8911/6840/files/gevakazeje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9191/1066/files/20488836605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7325/7118/files/bumem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2018/0894/files/96536119111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5920/7582/files/joint_fleet_maintenance_manual.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_off00008bf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF1 5256 bytes
SHA-256: 4208986765ea428cc750c0282351df3738426af03677ab66f39250a5e2055259
font_01_sfnt_off00009dc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DC1 10120 bytes
SHA-256: 36204df78e461960f97ac93b5d9971ae7ccf31c8e5d565b1db85f7e994e9a092

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