Malicious PDF — malware analysis report

Static analysis result for SHA-256 10d2b3c59ad152aa…

MALICIOUS

PDF

35.8 KB Created: 2020-08-05 23:07:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a6da9c3b068c1aeace132e7f0b974a56 SHA-1: 3d6e1d49b4c0225c9c1e68ffe53a630fd2720428 SHA-256: 10d2b3c59ad152aa7c17aa29735ac015a5c30b31ed277376e58972bef1fe3a32
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service known for malicious activity. The document body and heuristics indicate a lure for free downloadable content, likely a phishing or scam attempt. The primary redirector URL is https://ttraff.cc/pify?keyword=cambridge+primary+science+stage+4+book+pdf, which is used to funnel victims to other sites.

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=cambridge+primary+science+stage+4+book+pdf In PDF document text
    • http://files.elorafaye.com/uploads/1/3/1/6/131637016/zirum-zidugo-tewipirixelir-wipogomibuzeviw.pdfIn PDF document text
    • http://files.dunesdreams.com/uploads/1/3/2/6/132695566/zuritademewib-dorupuxaxig-fugob.pdfIn PDF document text
    • http://files.kristamaysart.com/uploads/1/3/1/0/131070485/xaxevijuvumoben_vevagisupa_zolugikunuwak.pdfIn PDF document text
    • http://files.hagenandoats.com/uploads/1/3/1/4/131437625/xubomatodedogozazuv.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/1/0448/2806/5949/files/cours_alphabetisation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0301/7378/files/luvadudilomafimipux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/526428265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2324/4191/files/16218399558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7793/5004/files/back_to_school_rules_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5731/4977/files/gexofapoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/41115346467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2127/9132/files/ohlins_dirt_late_model_shock_setup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/82726791856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5405/6095/files/yale_forklift_manual_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3415/5928/files/18236961100.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 7

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_off000047e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47E0 5744 bytes
SHA-256: 710b40ed18f101d52780c21d78881e1dc37bd1e7940a0d855c71c036748bd247
font_01_sfnt_off00005b64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B64 12976 bytes
SHA-256: abead28bf22836ce538a3b9c8314c0f8449ce945e250d20bcbfe7edc8dcbd7f3

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