Malicious PDF — malware analysis report

Static analysis result for SHA-256 b60079b3e51c2e81…

MALICIOUS

PDF

46.6 KB Created: 2020-08-10 08:00:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d2043d90dadfa1d3f1234abb70172801 SHA-1: bb664c72e037428b0645ca464be7663d2e37cab7 SHA-256: b60079b3e51c2e819825a3f98927d14388e9b5f668c27c9d68f1295b0c631811
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to external resources, which is characteristic of a link farm. One prominent link, 'https://ttraff.ru/pify?keyword=practical+skills+in+chemistry+2nd+edition+pdf', is identified as a malicious redirector. The document's structure and the presence of numerous links suggest an attempt to distribute malicious content or redirect users to phishing sites under the guise of providing access to documents.

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=practical+skills+in+chemistry+2nd+edition+pdf In PDF document text
    • http://vudozi.npcpasolutions.com/uploads/1/3/2/7/132740541/rekazijedi-roxoduvo-vezumeto.pdfIn PDF document text
    • http://files.ennismustangmusic.org/uploads/1/3/0/7/130738969/labifozodal-nowazelafato-fedaleg-joloziguweb.pdfIn PDF document text
    • http://files.advantagesupplyaustin.com/uploads/1/3/1/3/131379724/251269.pdfIn PDF document text
    • http://files.faiths-boutique.com/uploads/1/3/1/4/131483440/sebowekoribap-kinex.pdfIn PDF document text
    • http://files.nancyives.com/uploads/1/3/2/6/132681617/5837740.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0151/1064/files/82396556160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7512/5919/files/79096032314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4583/8248/files/beneficiation_in_south_africa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7879/3878/files/fodenupatovatibe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5453/7624/files/livros_em_sobre_behaviorismo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9579/3568/files/zumojajumefopunuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0608/9640/files/regal_cinema_mccain.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5326/8642/files/71848447109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5358/8390/files/notutinitopize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5265/5002/files/fuzofabiziriwig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8468/5224/files/16215887094.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1234/8315/files/56165382888.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000693e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x693E 5480 bytes
SHA-256: edfc425f8603054dfa7d289f48435dc4ac812a587044d38569bf9e30ff7896cb
font_01_sfnt_off00007bb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB4 10248 bytes
SHA-256: 36123df35b59b3c2ff5a195be7ce2908a3cdca9e93ae12958b58a9f0af3939bc
font_02_sfnt_off00009ea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EA8 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e