Malicious PDF — malware analysis report

Static analysis result for SHA-256 f57595383260556f…

MALICIOUS

PDF

35.1 KB Created: 2020-08-12 09:40:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c0cbdc33a3a2a878253fa4d20f2790d9 SHA-1: c37be047b7992308d5a7c9ae43716ed9ed8756ad SHA-256: f57595383260556f58ac68413c2b393c8d2e377ba6b6961b75228bdb1299a3fc
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 domains associated with link farms and redirectors, such as ttraff.com. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a link to ttraff.com, indicating a malicious redirector. The document body, though heavily obfuscated, contains the string 'Reserved sign pdf' and the malicious URL, suggesting a lure to trick users into clicking on the embedded links, which likely lead 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=reserved+sign+pdf In PDF document text
    • http://moporof.straleystudios.com/uploads/1/3/0/9/130969723/3749632.pdfIn PDF document text
    • http://files.elgintreepros.com/uploads/1/3/1/6/131636843/8166930.pdfIn PDF document text
    • http://pafizoju.itsbammtastic.com/uploads/1/3/2/6/132695584/fozilerodajenatozu.pdfIn PDF document text
    • http://files.kennedypickering.com/uploads/1/3/1/4/131452826/rufufabedevedaja.pdfIn PDF document text
    • http://lawam.bssmfg.com/uploads/1/3/0/8/130873951/semafuvozud.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7432/9499/files/static_gk_capsule_ibps_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7804/8151/files/41057193322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4032/files/zogubabatimovaranotovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0899/1143/files/vinirexaminefurareganax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2973/3282/files/50458939835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0264/2075/files/49219883294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/90906545855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8794/6143/files/spoken_english_books_free_download_in_gujarati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5293/3018/files/definition_of_symbolism_in_literature.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9302/5183/files/91693060889.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4272 4632 bytes
SHA-256: 5df5d67553c89d6f1d748c1132a0a5afb3dc1e18e9fdbf155611494b977e6775
font_01_sfnt_off0000523a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x523A 9268 bytes
SHA-256: 5147ce4ff1890952db5cc5a855d687209313a07b9fbe4ee2ca367492926277d3
font_02_sfnt_off00007209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7209 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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