Malicious PDF — malware analysis report

Static analysis result for SHA-256 81245c951477c995…

MALICIOUS

PDF

46.5 KB Created: 2020-07-30 20:58:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 52758b700c2c18b1aaf7628ab1b644a1 SHA-1: 6ed2fb233fff0c79e2e6cc2ee8e4b2eed60f8987 SHA-256: 81245c951477c995e593872147894cd228537c0ee271e2eaa1b3d3ec5f2de37e
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector pointing to 'ttraff.com'. This suggests the document is designed to lead users to a potentially harmful website, likely for phishing or to download further malicious content. The ML classifier also strongly indicated maliciousness.

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=instrument+technician+resume+pdf In PDF document text
    • http://files.juliacrist.com/uploads/1/3/0/7/130776795/861a3e.pdfIn PDF document text
    • http://files.statebirdtogo.com/uploads/1/3/2/7/132710687/a1b067.pdfIn PDF document text
    • http://files.agnesdaynursery.org/uploads/1/3/1/3/131384113/jaxisuwerin_kudogud.pdfIn PDF document text
    • http://files.lancebyreferral.com/uploads/1/3/0/8/130813979/tavomisokilekevutede.pdfIn PDF document text
    • http://files.face2.ca/uploads/1/3/1/4/131437941/2765e32d.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/1/0435/2134/3647/files/lupozelefogevox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/laxigitifudavizemitipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0462/3010/files/kagarifava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8153/9489/files/wulomebimefixifutamuxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0569/7438/files/44932580728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0276/4184/files/diwimodesavuxivufug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/47184882359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8946/0376/files/55593726854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8780/7129/files/59574010887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8248/0806/files/44675868392.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_off00007883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7883 5072 bytes
SHA-256: 56214cbbadd4ccdabe35a3658a3e71a5767dbd1b06a7e7af77635fce1e4509e7
font_01_sfnt_off00008987.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8987 10156 bytes
SHA-256: a50e3dc9e68594cade9fe5e23f197ec144139b87a72195a3c9ec3eca93871482

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