Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4004486d9838e5b…

MALICIOUS

PDF

41.3 KB Created: 2020-08-14 17:35:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 38f1195f892796bdffadf6796420eb4b SHA-1: a11cc069cce03a947706e7897e29901db5279e8d SHA-256: b4004486d9838e5b648fdcfb483117d00854ebd12e2024538c21a77065e12786
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a homeschool report card template. The document body also contains numerous links to external PDFs hosted on various domains, suggesting a link farm or redirection strategy. The ML classifier strongly supports the malicious classification.

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=elementary+homeschool+report+card+template In PDF document text
    • http://rulino.greenbelthumanesociety.org/uploads/1/3/0/9/130969423/runukiviwak.pdfIn PDF document text
    • http://files.orangevalleycreations.com/uploads/1/3/1/3/131383510/bujofaketuwomidabej.pdfIn PDF document text
    • http://files.elizabethsundahlart.com/uploads/1/3/0/7/130775543/3448342.pdfIn PDF document text
    • http://files.namicoloradosprings.org/uploads/1/3/2/6/132695531/vasifejanu.pdfIn PDF document text
    • http://files.cantstopforeveryimpala.com/uploads/1/3/0/9/130969054/9040689.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/1/0431/5843/8056/files/tebiketopazebal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4718/8640/files/rimanobivewuxesenililid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6072/3865/files/kali_linux_restart_network.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7824/5781/files/2837075538.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/nuxaxofimigavovumezititef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4526/5312/files/81632192329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8319/2727/files/26753982991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8992/8096/files/kelvinator_de_ville_oven_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91960476686.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_off0000641e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x641E 5372 bytes
SHA-256: fce3a6ebbbe355943f27e59f664688751ea051e21ed8dee007d0c5a2158a09ed
font_01_sfnt_off0000763b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x763B 10008 bytes
SHA-256: 22266b5812258272ebcc676b55f91a948af165d67b021800c7470b91e4f67ed3

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