Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d17bb4b874a7754…

MALICIOUS

PDF

38.4 KB Created: 2020-08-19 11:08:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f013fb4b390281691dd6c6dac371bd44 SHA-1: 7a281a307cc4d067904df26c3884b59f4bd5e2ce SHA-256: 5d17bb4b874a7754609315c6984ff7bb7ae7c8d9fef65c602f97fc70c17454e9
194 Risk Score

Malware Insights

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

This PDF file contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing campaign. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics, indicating a malicious redirector. The presence of many embedded links and a critical heuristic firing for malicious redirector links strongly 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.ru/pify?keyword=adana+demirspor+forma+2019 In PDF document text
    • http://files.sthelenskarate.org/uploads/1/3/0/7/130740044/8789925.pdfIn PDF document text
    • http://files.bretcharmanphotography.com/uploads/1/3/1/4/131454345/kekade.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/1/0432/2613/6743/files/avast_windows_7_32_bit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/2853/2635/files/phonetics_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/puvirebifafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5491/3950/files/70592592821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0652/4583/files/48701016109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/64536560199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2150/8509/files/19394867789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2181/1364/files/anivia_mid_build.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9463/8749/files/kuroxarajumegomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2746/3324/files/lagawaweravaxenajezamidi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/lapusumazude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1760/9122/files/91162048105.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_off00005352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5352 5624 bytes
SHA-256: f9e754c75380dd9dbce2efa64937e6c3fa7bb121f54349cd598730c76e4ea3c1
font_01_sfnt_off0000665a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x665A 11744 bytes
SHA-256: 97b18671b1c130326fe289ea5a8971f4f73ff6a9675becfe2bcf08557ffe6853

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