Malicious PDF — malware analysis report

Static analysis result for SHA-256 23b319837fcf6dd6…

MALICIOUS

PDF

34.3 KB Created: 2020-08-04 11:55:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 76f42f5be4caec1eab090d09ecc513bd SHA-1: ed61e491810437bde7ce05add5022f93e15ae7c9 SHA-256: 23b319837fcf6dd6a5042a811aba9ae0e32ddf75494fea5575ee5eb474fed8f5
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to ttraff.com. It also exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains hosting other PDFs. The document body, though heavily obfuscated, contains the URL https://ttraff.com/pify?keyword=btec+sport+level+3+book+2+pdf, suggesting a lure to download or view content related to 'btec sport level 3 book 2 pdf'. The primary malicious IOC is the ttraff.com redirector.

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=btec+sport+level+3+book+2+pdf In PDF document text
    • http://files.wickertmath.com/uploads/1/3/1/8/131871821/lebesefixarawej.pdfIn PDF document text
    • http://files.lendalejohnson.com/uploads/1/3/1/8/131871621/tadasirejuvodatajuma.pdfIn PDF document text
    • http://files.daniellewestdyk.com/uploads/1/3/1/4/131437236/ab07e48c.pdfIn PDF document text
    • http://files.geowyo.com/uploads/1/3/1/6/131606807/sitavisuke-kujoxuru-nanekigoz-bamefokenudakon.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/1/0433/3273/1038/files/wefomelum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7417/4632/files/pisunubexovanigoni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0151/1064/files/56024854783.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zotogobujadafozafinuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2376/0536/files/66785862989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/73363739762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53059057271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90675932679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7259/3832/files/kovofigalufile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6661/4175/files/69836314746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7240/5157/files/nuset.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0749/8647/files/nutok.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_off00004706.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4706 5548 bytes
SHA-256: 10f083ef84b3eabf5680aab176b3b5cb393db72908fdd548ee574337cd02909b
font_01_sfnt_off000059fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59FC 10020 bytes
SHA-256: 7eaafc1d2b4d0965bb521a5d76f345a1d143d017db0cbb3d87cc039f38e5069d

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