Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4f21c918b489fcf…

MALICIOUS

PDF

42.9 KB Created: 2020-08-14 03:01:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8723baf4e6092ec0e30eafed86523f85 SHA-1: 91c850eb4ad97642d687cf2f372cdcf2dedd141f SHA-256: c4f21c918b489fcfbda1f0d3a9f66a9bb5f28716534568dc9d9f57c9ef8f8894
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and mentions a 'cake shop game for android', suggesting a lure. The PDF also contains a large number of external links, many hosted on Shopify, indicating a link farm for SEO manipulation or distribution. The primary malicious URL is https://ttraff.com/pify?keyword=cake+shop+game++for+android, which is likely used to redirect users to further malicious 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.com/pify?keyword=cake+shop+game++for+android In PDF document text
    • http://files.cedarkeyoutfitters.com/uploads/1/3/1/4/131452949/bujozabamulane.pdfIn PDF document text
    • http://files.leescrossroadmbc.com/uploads/1/3/2/6/132682970/volagikulox.pdfIn PDF document text
    • http://files.camerasforconservation.com/uploads/1/3/0/9/130969237/9661398.pdfIn PDF document text
    • http://files.burmusik.com/uploads/1/3/0/7/130739309/fitexaz.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/1/0435/9372/8158/files/pixadagesariba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8553/6159/files/vofelolojoxoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/40219325304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7468/0987/files/43712699224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9093/5969/files/74366646805.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/wumevemixos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3596/7143/files/72908500754.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8345/4872/files/gojevenulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4826/4089/files/lunilabuxekanujiwoletet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4564/9574/files/91093231868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/valivijozilafalidepona.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_off0000695a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x695A 5392 bytes
SHA-256: 8861563c9ab7945e82586d6143c9c81512c7b0346e4a8932012b0e2999871f76
font_01_sfnt_off00007b8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8C 10180 bytes
SHA-256: 47cb8f854489ba5b5068aa4eddde9b73e9fc63c6c394cd6871c5917621147b21

Open this report in the interactive analyzer, or submit your own file for analysis.