Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aa64d485a1e111e…

MALICIOUS

PDF

44.1 KB Created: 2020-08-19 10:58:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e6428ae6faad3bff6f7e4f4e5556c7dc SHA-1: f74dc910f49af7cdc57c05e80a018a86282c2d5c SHA-256: 8aa64d485a1e111eb9ac76461ecfb1d7b84e0f1e25d67b4806e7b40d51c3ec82
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains, but one critical link redirects through ttraff.com. This indicates a link farm strategy, likely intended to lure users to malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution attempt.

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=lab+report+abstract+example+engineering In PDF document text
    • http://files.southernoksrrodeo.com/uploads/1/3/1/1/131164046/kavadufavul.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/1/0434/4443/7142/files/bojederafelakikigufusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8646/2628/files/17814697348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8085/1364/files/66227083882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7284/0090/files/gisokugovibotelavexid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0898/1153/files/sineneduboxepidid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wopeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6408/1046/files/jorge_basadre_libros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5973/9814/files/giterujumudugemakusu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riginijulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0305/2191/files/24150592938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5405/6092/files/xozokili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1625/5645/files/bioavailability_and_bioequivalence.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 2

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_off00006f39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F39 5404 bytes
SHA-256: 80e15233185f38a0f6dab24eec2980ba53c28121d24bf728fac261430cc34b14
font_01_sfnt_off00008188.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8188 10076 bytes
SHA-256: bb518ecf40b19c8eec1926a3a5e9df547a520a4484aa187353a183d7ba710ed5

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