Malicious PDF — malware analysis report

Static analysis result for SHA-256 79143a315ea31da2…

MALICIOUS

PDF

49.0 KB Created: 2020-08-04 09:34:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 72b1c4ae9592958cacb3c40d086ffcc9 SHA-1: 4b2f3ce4424bee40281e71a39c26dbc58deea662 SHA-256: 79143a315ea31da21453efa29f26c32bd740ed58dbbad4ee310ff2334728f5e1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. A primary redirector URL, https://ttraff.ru/pify?keyword=the+black+boy+richard+wright+pdf, is identified as malicious and likely serves as a lure for phishing or malware distribution. 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.ru/pify?keyword=the+black+boy+richard+wright+pdf In PDF document text
    • http://files.aj-marketing.co.uk/uploads/1/3/1/4/131407918/bibozebavarezob.pdfIn PDF document text
    • http://files.myoridefitness.com/uploads/1/3/1/4/131454916/763051.pdfIn PDF document text
    • http://files.epictherapyandwellness.com/uploads/1/3/0/7/130738892/7110317.pdfIn PDF document text
    • http://vikuvej.bwitched.com.au/uploads/1/3/0/7/130776483/mukukov.pdfIn PDF document text
    • http://files.bowentherapywithann.org/uploads/1/3/1/4/131409090/lobezesolime.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/1/0431/6463/1195/files/24157966980.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9557/0072/files/vapusuripapajesovikuvutin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1052/2277/files/nunososipij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3355/8168/files/doxuvomuzivogixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5702/9018/files/dalinoganugekava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7379/8298/files/64046458948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/9775089030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nifafujejugafux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/49465686467.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_off000081da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81DA 5584 bytes
SHA-256: 033f3b42258f9c98b5a1dac9e80d712899eaf77c8e1ad90025c8cecc8fa283ea
font_01_sfnt_off000094ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94EE 10076 bytes
SHA-256: c13edc8e2898a8674296abb92882065284fbfc24262493ca7e2bef9c51f5990e

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