Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7ddc46eb68728b0…

MALICIOUS

PDF

44.1 KB Created: 2020-08-05 12:57:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9816d050104729750417c12d6a700927 SHA-1: d2b9e6ed515b8c9a534d0acfaf0bc1e4208ee415 SHA-256: c7ddc46eb68728b0adb20c2348de533050bca0a57b9d626a56faa204fa36b1bd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious File: Malicious Link

The PDF contains a mass external link farm, with a primary malicious redirector link. The document body text is obfuscated but contains keywords related to a PDF download, and the embedded URLs suggest a phishing or SEO poisoning attack. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful content.

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=alice+munro+dear+life+pdf+download In PDF document text
    • http://files.ambatilab.com/uploads/1/3/0/8/130874039/d6f728faf.pdfIn PDF document text
    • http://files.tlcraingardens.org/uploads/1/3/1/0/131070993/4403743.pdfIn PDF document text
    • http://bebopezug.fidelcantephotography.com/uploads/1/3/0/8/130813612/2115176.pdfIn PDF document text
    • http://files.wilsonceramicknives.com/uploads/1/3/1/8/131856919/fc3882c.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/1/0428/8879/0179/files/9158409512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0981/0327/files/ages_and_stages_9_month_questionnaire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91146339154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6508/9941/files/86254512878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4637/8404/files/40866736556.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2384/2978/files/avalon_hill_civilization_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9054/2753/files/wilola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9524/4441/files/gyrochronatom_wow_classic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6738/3713/files/basic_spanish_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7811/3690/files/56035605776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9223/0823/files/gamma_ray_gungeon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/jesaxefujuroximuwexug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9317/1103/files/pijak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9224/5666/files/prodigy_hack_github.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 6

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_off00006db4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB4 5204 bytes
SHA-256: 9c9caf1b02ec4b3fc1af06464c8c96d1a4d5397de2b163068056a7126fa7e8fe
font_01_sfnt_off00007f65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F65 10564 bytes
SHA-256: fd60de46738f241a8a2aa616564c25b9814fe346af4980ef726ffad783ac1622

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