Malicious PDF — malware analysis report

Static analysis result for SHA-256 38aee3b668a4e85d…

MALICIOUS

PDF

40.3 KB Created: 2020-08-04 05:02:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 26e55ef3106e5f80237ffdd7db3dcce0 SHA-1: 3110173107eeba9ea179b719b36a9284506d9185 SHA-256: 38aee3b668a4e85d540377e2c467ab554a29b7dca8e62cfa9dc7fdbfe3d6a026
194 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The document body contains numerous embedded URLs, including a primary redirector at 'https://ttraff.cc/pify?keyword=npa+and+basel+norms+pdf', which likely serves as the initial lure. The presence of a large number of external PDF links suggests a strategy to distribute further malicious content or phishing pages.

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=npa+and+basel+norms+pdf In PDF document text
    • http://files.electronicrepairegypt.com/uploads/1/3/1/4/131408364/tipimikefakukasape.pdfIn PDF document text
    • http://files.nationalartsclubaustralia.org/uploads/1/3/1/6/131637854/1372067.pdfIn PDF document text
    • http://files.stmaryschurcheg.co.uk/uploads/1/3/0/9/130969801/nuzezoxeku-kudexi.pdfIn PDF document text
    • http://files.coastaleducationservices.com/uploads/1/3/1/6/131606954/zekemodazizezek.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/1/0439/2439/0056/files/sazodupotime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7798/3653/files/91592813488.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kilezolesosobusafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8156/3286/files/64984141103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0576/2974/files/24456399732.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8568/5153/files/miwapejit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2812/5595/files/57916650093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6505/files/wusavugelezoniwovobadame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7194/7430/files/xidawugevimalig.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_off00005fe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE4 5296 bytes
SHA-256: 478d53cb599d1a9e0af8a4c3f02ff6acf5aa5367090d26803c88d5878aff6d3a
font_01_sfnt_off000071ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71CA 10164 bytes
SHA-256: 3597b80266662f355970169d39725c1c29d6312dafb2a96b6424870da6883996

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