Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a9366ce45e07f73…

MALICIOUS

PDF

45.8 KB Created: 2020-08-24 16:40:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c947fb3702a27f8e6b4629c00f526a50 SHA-1: 4676cca2162ea154ab6f0b5f9f05c24163608ea6 SHA-256: 1a9366ce45e07f73d8376e865d8cd4fc202b361e84e463357c813d67e385296b
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm and a redirector to malicious infrastructure, indicating a phishing or scam attempt. The presence of a 'download button' lure and a keyword-relevant title in the document body further supports this. The primary malicious IOC is the redirector URL, which is designed to lead users to further malicious content.

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.cc/pify?keyword=cycle+race+game+free++for+pc In PDF document text
    • http://files.forevertyler.com/uploads/1/3/1/0/131070911/afece9dd3.pdfIn PDF document text
    • http://fezopa.grandhavenbucsfootball.com/uploads/1/3/1/4/131406717/maguja-jexutavedubina-jetotu.pdfIn PDF document text
    • http://files.americalibertyforum.com/uploads/1/3/1/3/131398333/5103526.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/1/0440/1581/2766/files/leather_jacket_sleeve_length_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8632/1566/files/dudilule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0151/1068/files/gmat_sample_test_papers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2096/6293/files/mixumiduw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48695811849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6196/7013/files/altruistic_punishment_in_humans.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/51795239429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0421/4942/files/59789333383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1792/0934/files/safevogav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9938/2170/files/abnormal_psychology_16th_edition_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3519/6568/files/jidenezexozazovemixidepi.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 3

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_off000076bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76BD 5164 bytes
SHA-256: 2408bc202dc6e1c16b02cd854156262fb57be9b2403d4c02a98f31692a0e57de
font_01_sfnt_off00008840.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8840 10032 bytes
SHA-256: 95ba011ca05d036cc06f62e1df1ac860cc53e3c87198ec8d6542289d91f7de9c

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