Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bede2ac3cf9bcd9…

MALICIOUS

PDF

43.5 KB Created: 2020-08-09 00:31:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1779752894bb434453b626786afd36b4 SHA-1: ec8927f4ff71cf330f598a102072182b2a3815fb SHA-256: 4bede2ac3cf9bcd93441a41672502dcb010df15cc02f0a1528b9b2fa630e31ab
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lure users to malicious content. The document body, though heavily obfuscated, contains the same URL and a title suggesting a benign document, indicating a social engineering attempt. The ML classifier also strongly flagged this PDF as malicious.

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=pengertian+rawat+jalan+pdf In PDF document text
    • http://putupugel.jbelova.com/uploads/1/3/1/4/131406202/lexekazukevuso.pdfIn PDF document text
    • http://files.motionalstudios.com/uploads/1/3/0/7/130739233/327095.pdfIn PDF document text
    • http://files.bournemouthfilmschool.com/uploads/1/3/1/6/131636792/c556b9090bb5c3.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/1/0433/0687/7080/files/borutazaweluv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8511/0177/files/39855197702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1641/3607/files/27499386062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0481/3721/files/18302861018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6027/4087/files/divosodase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7022/5574/files/dejusixifusev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8851/9080/files/66539191495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7923/6774/files/good_presentation_skills.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1960/6936/files/xekikolasarisimimaroz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/jurigegivewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3197/8403/files/nutritionist_job_description.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4302/7106/files/94687628801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4405/2898/files/78880650097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/58577621247.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_off00006c8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C8B 5200 bytes
SHA-256: 9b200357398e04ae321ba6167d5552aa92d8e8c8d23f037f5837067804388898
font_01_sfnt_off00007e67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E67 10144 bytes
SHA-256: ac01450bb3ba82119881a62afc96aa9c9ba264804c33cc2b7ceac4e3432de5b0

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