Malicious PDF — malware analysis report

Static analysis result for SHA-256 af7e08636b34a321…

MALICIOUS

PDF

34.2 KB Created: 2020-08-19 03:31:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 13a92007eb545627425c729e4e726c3c SHA-1: 27f35f33375132158512089f7ee80e2b50df133f SHA-256: af7e08636b34a321c3d717c4536c8250e7a9e548da478215e7c0897a406fdfd3
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.cc/pify?keyword=burda+pdf+gratuit, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to 'Burda pdf gratuit' and the URL, suggesting a lure for users seeking free content. The ML classifier also strongly indicated maliciousness.

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=burda+pdf+gratuit In PDF document text
    • http://files.heelingjourneystherapies.com/uploads/1/3/1/4/131407857/morotituguvowufokepa.pdfIn PDF document text
    • http://dedekojab.nancicharpentier.com/uploads/1/3/2/6/132695569/jojog_mozatiwiriv_folig.pdfIn PDF document text
    • http://wufebimem.why-jewellery.com/uploads/1/3/2/8/132815806/1e6b1cef4.pdfIn PDF document text
    • http://files.steelin1.com/uploads/1/3/1/3/131398279/semunup.pdfIn PDF document text
    • http://files.earthcraftpermaculture.com/uploads/1/3/2/6/132695568/tusikuximujeziw_sekesawifetaxol.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/1/0430/8333/3786/files/bumepolunarupetameriliker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0742/7238/files/nabuwekigigijukuregeto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6612/9574/files/toruto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/33886518604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0265/8979/files/kezupefubufotorewoxobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/kodog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5450/5882/files/ditudanukidoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6638/2746/files/86627203737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0581/2633/files/cashalo_loan_apk.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_off00004745.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4745 5048 bytes
SHA-256: 7e1a83cbd7dea5418881325aedf5520e2e5d334c3921b180c23503f30911febc
font_01_sfnt_off00005889.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5889 10976 bytes
SHA-256: 8a1ea18e2f5d893c06463734c17d56c5963443fa6e75f9627fa68401fe9bb134

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