Malicious PDF — malware analysis report

Static analysis result for SHA-256 10f9474216c0ebad…

MALICIOUS

PDF

46.9 KB Created: 2020-08-13 15:41:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 59149a44de5dec67047f6fcd035c021a SHA-1: e44ff5edda0488733906071c388933aa0ad43a53 SHA-256: 10f9474216c0ebad49dfdf11ca6e7a261be34f8c27487af4cb228b2fed2bf8d2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to appear as legitimate documents, but they redirect to malicious infrastructure. Specifically, the link https://ttraff.ru/pify?keyword=captivi+plautus+pdf is identified as a malicious redirector. This suggests a phishing or scam attempt, likely using a "free download" lure to direct 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.ru/pify?keyword=captivi+plautus+pdf In PDF document text
    • http://legax.kauffmanfraser.org/uploads/1/3/2/7/132741334/zowikada-rafapufupoter-didobexawajeve-notatarizobezok.pdfIn PDF document text
    • http://zipowol.cattailcreative.com/uploads/1/3/1/4/131453329/4260edb29f0.pdfIn PDF document text
    • http://files.interlakescommunitycaregivers.org/uploads/1/3/1/3/131384286/muduxafo_vajozodubaxuv_xorip.pdfIn PDF document text
    • http://files.jandabendquilts.com/uploads/1/3/1/6/131606876/50e71188df4.pdfIn PDF document text
    • http://files.thenextstepridingservices.com/uploads/1/3/1/8/131858287/6825764.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/1/0434/4994/2168/files/abas_iii_scoring_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9452/2523/files/zamutizasitovabudozatafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4711/6185/files/learning_and_behavioral_psychology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/statistics_probability_questions_with_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9468/6376/files/vigadejipovifimopus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9302/4149/files/58408649126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9509/5464/files/73649834936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2558/7610/files/ap_scert_text_books_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8085/1362/files/88488608687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3735/2358/files/93403980359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1601/9355/files/jack_lalanne_juicer_manual.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
🗂 Part of campaign: effinghamelementary.org 9 samples

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_off00007770.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7770 4904 bytes
SHA-256: aaed1bea1c9bdf16f1901e7e0389fe56ea2269afb9e679c6fd090798264383a9
font_01_sfnt_off0000883b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x883B 11104 bytes
SHA-256: 1906bd04097ff979c694783324eecd2baa6c3d58773132ed80a78d7389bf9a0f

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