Malicious PDF — malware analysis report

Static analysis result for SHA-256 a687cb612b96d29d…

MALICIOUS

PDF

41.1 KB Created: 2020-08-20 22:58:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 145894d749f03612c827fbbb1a8be776 SHA-1: 5bf00520e36aa51cce02859ca0db6ac8856646e3 SHA-256: a687cb612b96d29d0f8e9d9f0c63540ff35bfef7fe348535a9527f7b7555b952
202 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.com) that is flagged as malicious. The document body, though heavily obfuscated, contains text related to PDF conversion and a URL that likely serves as a lure. The presence of a 'download button' heuristic further supports the phishing pretext. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/pify?keyword=pdf+to+editable+word+converter+ocr In PDF document text
    • http://files.chippewafsc.com/uploads/1/3/1/3/131397934/riwokotowekowewov.pdfIn PDF document text
    • http://kenaga.bioactivtherapy.com/uploads/1/3/0/9/130969873/8438340.pdfIn PDF document text
    • http://nuzabarow.listerrents.com/uploads/1/3/1/4/131437237/parizugixori.pdfIn PDF document text
    • http://bekedapej.mccoyagency.com/uploads/1/3/1/3/131384709/a3333caca16088.pdfIn PDF document text
    • http://files.eceti.org/uploads/1/3/0/9/130969472/8651358.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/1/0448/2826/2560/files/pusop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/81179118822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3432/0794/files/8544267830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8630/6710/files/55460315139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4002/9344/files/kevidixomojufifaxupasib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6309/9040/files/juwafunoxazodoparidim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7490/2423/files/48946555712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8100/7255/files/pixoveterobagitajasapanik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2207/3506/files/wurolumanuzevedukowoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6042/7928/files/42856125807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bovegutug.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 5

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_off000062a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A5 5128 bytes
SHA-256: 289a85b816f360e2b852b5707adcd6b597643aff0d642b9dd9ee38b9c7a3c20a
font_01_sfnt_off0000743c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x743C 10328 bytes
SHA-256: 7efa5377e239d0a5d98428b48fb63514a8f6cc992e61e27e1370fa738142cce9

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