Malicious PDF — malware analysis report

Static analysis result for SHA-256 142c31ade862b1e6…

MALICIOUS

PDF

523.5 KB Created: 2020-07-29 21:14:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: daf713b5749f2c98b45cf63e012a2e14 SHA-1: d94367fe09e2d8f7396629d24d5c4fd02f26307f SHA-256: 142c31ade862b1e6dfa4a32e49122886e40cc0932f016211a67314057ad1e5a3
134 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious infrastructure, specifically `ttraff.cc`. The document body and heuristics suggest a lure related to 'tax administration act pdf' to entice users to click the malicious link. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9624

Heuristics 4

  • 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.
  • 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.cc/pify?keyword=tax+administration+act+pdf In PDF document text
    • http://files.scotmailing.com/uploads/1/3/0/8/130874125/vamemuxedovigif-tokarez-rejafusuganozo-kipamemaxutug.pdfIn PDF document text
    • http://files.premierweb.org/uploads/1/3/1/4/131437862/2861824.pdfIn PDF document text
    • http://files.struncburkefoundation.org/uploads/1/3/2/7/132712072/giwurewirupobiz.pdfIn PDF document text
    • http://files.yogamuseinc.com/uploads/1/3/1/8/131872238/7553013.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/1/0429/6884/2393/files/88568052417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6547/5226/files/tuwatabisojadusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6795/7660/files/38566831304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3988/2402/files/xigujenaxivuzumenuzenop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1908/2651/files/78087267534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1690/4104/files/22269311698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1567/5809/files/88542915856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5817/5901/files/56579619184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/jesezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1880/3607/files/vekujamure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0940/0214/files/74517502590.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_off0007e6ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E6AC 4956 bytes
SHA-256: 522205e040e9da08b966a5d1f2cb08a5f659224b7a1242e6aa660060b180d38a
font_01_sfnt_off0007f772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F772 10760 bytes
SHA-256: 92cd74abf7fb3a71fb6e7094ff724eee0d3db3f0bca2e28045c746ec9cd656a0

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