Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d9f9c0ce7585e1a…

MALICIOUS

PDF

43.0 KB Created: 2020-08-21 09:52:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2a81c30982c99849d7cef42b25a883b5 SHA-1: 85bdf8a082249cf64f688b8da57b4593cf8510fd SHA-256: 1d9f9c0ce7585e1a802a1e99da8f2e128230f41c070c9f86a09c1e5b15c54482
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=samsung+a20+mobile+phone+manual'. This indicates the document is designed to redirect users to malicious infrastructure. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The presence of obfuscated document body text containing URLs further supports the malicious intent.

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=samsung+a20+mobile+phone+manual In PDF document text
    • http://files.trinicrew.net/uploads/1/3/1/3/131384575/4585863.pdfIn PDF document text
    • http://files.latelierpatisserie.com/uploads/1/3/2/6/132695258/9675465.pdfIn PDF document text
    • http://files.crjartwork.com/uploads/1/3/1/3/131379608/4104096.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/1/0430/8982/1845/files/pigodeja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5433/3093/files/zokitubotozeborevorejoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jaxigosileworu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9345/1159/files/behaviourism_theory_of_learning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9350/5688/files/78957804560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9162/4096/files/43257138099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5737/3589/files/34486011772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71895705060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3272/1046/files/benjamin_britten_ceremony_of_carols.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A48 3724 bytes
SHA-256: 0bc2187513754c209a1ff1b79f120b31e782b370bd3c40d674ca37d1cde5bce0
font_01_sfnt_off00006785.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6785 5656 bytes
SHA-256: 584a4bff92db587a04b417d1a8aad7df67495f91682d7275b55de0fc282deceb
font_02_sfnt_off00007a8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A8E 10640 bytes
SHA-256: 21edb98d347238292e6aa81985d86898d197c8181dace09872e263b4c80fa3e3

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