Malicious PDF — malware analysis report

Static analysis result for SHA-256 f413a89f24d233aa…

MALICIOUS

PDF

40.1 KB Created: 2020-08-10 10:04:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0791f83bb15b42df9f5b190c436bc25b SHA-1: cc54fce395e581d796bf8a8fa610f24103e43208 SHA-256: f413a89f24d233aa29f0c046a0c491469165efbaf4ad83409b12d6f8c627a875
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, disguised as a textbook download, redirects to a malicious domain (ttraff.com). This indicates a social engineering attack aimed at tricking users into visiting malicious sites. The ML classifier strongly supports the malicious nature of this PDF.

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=oxford+textbook+of+vascular+surgery+pdf In PDF document text
    • http://files.healinginmotionpt.com/uploads/1/3/2/6/132682124/mebuxoxoxod_gekewu_fijelofal.pdfIn PDF document text
    • http://files.sawdustsistersbirdhouses.com/uploads/1/3/1/3/131398385/rawuxazoveno.pdfIn PDF document text
    • http://files.awordywomansguide.com/uploads/1/3/1/3/131380558/sewezakogotizij.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/1/0434/4371/6262/files/68875895617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4648/5672/files/bejuzadebuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7224/2342/files/xifadiniwijusapibola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0645/1094/files/gofexas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8103/1075/files/30580906872.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/todays_hebrew_date.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5207/2088/files/dedogodogapazalanadusiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0913/8084/files/nojizosemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3998/0710/files/la_bobina_de_tesla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6283/4853/files/zefamowalap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/1210/1020/files/estimation_of_evapotranspiration.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8119/3885/files/nifedulasupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9671/1073/files/oxford_bookworms_library_starter_escape.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 6

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_off00005dea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DEA 5784 bytes
SHA-256: 981d2fedc475c90144f346cec6901d6b584f8bb20470fda0cf3048d80b5b46aa
font_01_sfnt_off000071ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71BA 9856 bytes
SHA-256: 351275cb69658835f53c2e14315e4b0db1d5f50a9b30e8878cfc628bb4856aad

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