Malicious PDF — malware analysis report

Static analysis result for SHA-256 797887f3d176147c…

MALICIOUS

PDF

38.2 KB Created: 2020-08-09 22:54:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b84093e93636d793cc17de1508c9f3ca SHA-1: e8a2320bd40421ffdfd826ec0915ea01aa30d457 SHA-256: 797887f3d176147c225d3639e3cdc8a833f664ebacabcb6aa2527c742eec1372
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one to a known malicious redirector at ttraff.com. This redirector is likely used to obscure the final destination and potentially deliver a malicious payload. The presence of numerous SEO-optimized PDF links suggests a link farm used for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=calendrier+2020+tunisie+pdf In PDF document text
    • http://files.christmovementinternational.org/uploads/1/3/1/8/131872021/297fe.pdfIn PDF document text
    • http://files.whatsnextmiddlesex.org/uploads/1/3/1/6/131606984/mobufebagosafezologi.pdfIn PDF document text
    • http://files.canadianrivervalleyrevenge.com/uploads/1/3/0/7/130740443/5608059.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/1/0433/5039/2984/files/23510191571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8758/4675/files/42663434011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8326/0314/files/emotional_development_in_preschoolers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7272/3875/files/filutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/webopexamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8658/4733/files/latewajugiwuwilijirid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1035/7405/files/wojeluvefijasix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7013/6218/files/enchainement_d_accords_guitare_basse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7303/6697/files/it_project_manager_resume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/55339353060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4092/3048/files/dbt_workbook_for_borderline_personality_disorder.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_off00005488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5488 5216 bytes
SHA-256: 4f147724430b68e8f5ce70197c2e1ab083a0bc4279dfb26866e326b925aa4c42
font_01_sfnt_off0000664b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x664B 11236 bytes
SHA-256: d94ed303638354b0e967114b5c4c71441923c77dfec6fbbc5d30223991e992b9

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