Malicious PDF — malware analysis report

Static analysis result for SHA-256 25a17efee2aa0a91…

MALICIOUS

PDF

46.3 KB Created: 2020-08-07 01:13:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e39bda69f16f5fd67a97c2c25d2950c8 SHA-1: 9757c4fae8c5bbb931c44b96d137f41511295175 SHA-256: 25a17efee2aa0a913274500b193933122fff392a254f2996da49c0efc552ddbf
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.ru. This indicates a phishing or malicious redirection attempt. The ML classifier strongly supports the malicious nature of this PDF.

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=british+english+american+english+vocabulary+pdf In PDF document text
    • http://files.jstarkdesign.com/uploads/1/3/1/8/131857305/mirabat_luguwejubuzut_derefamesitaro.pdfIn PDF document text
    • http://files.georgisztojanov.com/uploads/1/3/1/4/131453354/rakejixi_lejokelomada.pdfIn PDF document text
    • http://files.mallahdivinemallah.com/uploads/1/3/0/7/130739898/cd65f5527923e83.pdfIn PDF document text
    • http://files.forestermusictherapy.com/uploads/1/3/1/8/131871433/vilafebesovedi.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/1/0432/1666/6786/files/wipevuwisiziteji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/41215542384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/get_user_input_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8191/5809/files/cancer_causes_and_prevention.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3724/5085/files/tunemajapelupifitidipef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jedufejaselikaruratemop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6744/0290/files/pisususosinakirulagimim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2159/0951/files/10180026438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6244/3683/files/repagurife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0090/5380/files/79638241503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3239/6447/files/letawevidebepisedipuz.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_off00006b8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B8F 5920 bytes
SHA-256: cda81a45ed8ec6f83ec624fa002b772436fded7a49d3eaa29ba43489d20f402b
font_01_sfnt_off00007f9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F9C 14056 bytes
SHA-256: 382dc4520f4d73549d5c97674d17d38acccf8eb2cc45b25e5d8383d131565025

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