Malicious PDF — malware analysis report

Static analysis result for SHA-256 668cb5b3a7c878e2…

MALICIOUS

PDF

47.1 KB Created: 2020-07-28 19:58:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c486c5fa901550039ce379085f299578 SHA-1: 61f37a1b267b4f52dba6876cb52b9bf450a87fe7 SHA-256: 668cb5b3a7c878e2e5adb30722570951d0e181763ad08eefd5a9208ba05b726c
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body, though heavily obfuscated, suggests a lure for a 'free minecraft game download'. The presence of a large number of PDF links, many hosted on Shopify, indicates a link farm designed to attract search engine traffic and distribute malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=game+minecraft+gratis+tanpa+bayar In PDF document text
    • http://files.thegoodmedicineshop.com/uploads/1/3/1/3/131398142/9668768.pdfIn PDF document text
    • http://files.thehighanxietyrunner.com/uploads/1/3/0/8/130813667/tezikibezikufizesat.pdfIn PDF document text
    • http://files.losachicboutique.ca/uploads/1/3/1/6/131637896/595561.pdfIn PDF document text
    • http://files.dontdate-her.com/uploads/1/3/1/3/131380651/6346a7b.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/1/0430/1442/2677/files/56820778749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3350/9535/files/51884162997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5886/4028/files/42557915727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9066/3832/files/xobisagigalogowiteno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5480/0797/files/rixadizidifeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/kokijamewarusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9731/7783/files/70901811692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5937/2439/files/bafemabinem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0940/1251/files/tifajexerisiwisaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexanenivoxepabulolud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1148/7397/files/papuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1290/7427/files/51317205588.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 5

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_off00007b36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B36 5252 bytes
SHA-256: cac4328a2e2079497b08f851d7f229c3de4fd59c936bbc226756c9908cc94c00
font_01_sfnt_off00008d01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D01 10004 bytes
SHA-256: d3c532fae248f73e686d0ceb2388b5dcf9ee64a72de064e30ef3637474c4ca8e

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