Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b90935dce56ec66…

MALICIOUS

PDF

32.8 KB Created: 2020-08-11 13:06:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 56a3b7d1ecc199a8d216fee5cfd9a25b SHA-1: 5bb0f47b115c52f28f0ea3c1dc102e6bd7ac07fd SHA-256: 5b90935dce56ec66377f4d93a4913f74270256351ef4199539a55f0038a6dcd5
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to an SEO redirector infrastructure. The primary redirector URL, https://ttraff.com/pify?keyword=hydraulic+bearing+puller+project+report+pdf, suggests a lure related to technical reports. The ML classifier strongly indicates maliciousness, and the presence of multiple links to external PDF files, some benign and some unknown, points towards a link farm or phishing campaign.

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=hydraulic+bearing+puller+project+report+pdf In PDF document text
    • http://files.impactdesign.co/uploads/1/3/1/1/131163634/kages-xolurumixen-zisuzoxa.pdfIn PDF document text
    • http://rumad.churchofchristturlock.com/uploads/1/3/1/4/131407535/turujofizewulokasex.pdfIn PDF document text
    • http://files.coloradowheatens.com/uploads/1/3/2/6/132681992/janag-jitajebizez-xewezolego.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/1/0432/3888/3495/files/daria_restoration_project.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7382/2102/files/bawip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4798/4027/files/palura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4845/9673/files/65341454724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/demofemufexurus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7048/7702/files/13269512902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6258/2693/files/sozebugepabefokojoliwowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7316/6757/files/busuzerevopuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3046/3142/files/gatodusovexaramibatite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2622/7093/files/pdf_to_word_converter_nitro_pro_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files/97858935598.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_off0000450c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x450C 5424 bytes
SHA-256: 07508a9d6a3a8359ee17e13f7cd081877f8067d817aab21fae9b390dd482cdb4
font_01_sfnt_off00005788.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5788 9024 bytes
SHA-256: 06d55402371c67abc027b18d6bc0d106fa67466a4e0ce91dce9c4e91cae4796a

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