Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fd4caf7da55041a…

MALICIOUS

PDF

39.4 KB Created: 2020-08-24 22:19:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 29249c25a6463e1f8dfc3a494c47f162 SHA-1: 334800a602cd7ff5017fd8a5e66b3530b5cb5757 SHA-256: 6fd4caf7da55041ad402cf49d069e76a640faa83b356ab5b8eab111120921c55
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to redirector infrastructure. The primary malicious link, 'https://ttraff.ru/pify?keyword=brawl+stars+iphone+apk', is presented as a lure for a game download. This indicates a phishing or scam attempt designed to redirect users to potentially harmful content. 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=brawl+stars+iphone+apk In PDF document text
    • http://files.janvantblik.nl/uploads/1/3/2/7/132740362/ziwifej.pdfIn PDF document text
    • http://filiso.marvinjwolf.com/uploads/1/3/0/7/130738850/647228dfaafbb8.pdfIn PDF document text
    • http://roxudel.djsavak.com/uploads/1/3/0/7/130740596/fawixonelanusux.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/1/0433/7709/8913/files/98542540810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2489/9496/files/52189328704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4455/0294/files/zibizumoxaxopuninir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9383/5432/files/25221598460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7043/1125/files/zujuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2679/2093/files/16447980991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4939/4071/files/ctet_2019_marksheet_kab_aayegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7910/6724/files/behavioural_objectives.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4970/5881/files/fccla_power_of_one_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1075/2663/files/rovalemekowadapevoxiruvaw.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_off00005d0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0D 5112 bytes
SHA-256: 2ba1ed44dbd5046abd14a52248ff859a42f310dace6bb18afebc8bad9fb13572
font_01_sfnt_off00006e7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E7C 10152 bytes
SHA-256: decaeaf45c26245b5ab1fa2eff85a58f5d9e35c6db28aa823388a64269808e44

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