Malicious PDF — malware analysis report

Static analysis result for SHA-256 05be16c37fa2e4c6…

MALICIOUS

PDF

42.2 KB Created: 2020-08-02 03:02:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 64d5a201e4923effef6d802bd5b91556 SHA-1: 76d6a7f2f84197f9e6a6d714d7d6d88684d0c019 SHA-256: 05be16c37fa2e4c63b01d5b05ededba579b10f8ccf817e1de3476a34eafc917d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external resources, masquerading as a "Mechanics of materials 6th edition pdf" download. The primary link, https://ttraff.ru/pify?keyword=mechanics+of+materials+6th+edition+pdf, is identified as a malicious redirector. The document's structure and the presence of a large number of PDF links suggest it is part of an SEO link farm designed to lure users to malicious infrastructure.

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=mechanics+of+materials+6th+edition+pdf In PDF document text
    • http://files.noeldouglasorput.com/uploads/1/3/1/4/131409200/matiroweju.pdfIn PDF document text
    • http://files.emsactors.com/uploads/1/3/1/1/131164202/kaxijum.pdfIn PDF document text
    • http://files.villa-anggrek.com/uploads/1/3/1/3/131379371/difisudenaborex.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/1/0439/2484/8795/files/jidupaponizatumodot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/87899189988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6948/8798/files/wemijuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/da_31_leave_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0067/6001/files/72682785285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8386/6007/files/ximawawidudid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2556/2775/files/506538358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2358/0831/files/2188950972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0571/2296/files/sas_missing_values.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/86922021027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8035/1897/files/bbg_2._0_free_download.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_off00006684.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6684 5552 bytes
SHA-256: 10993032e2336a1253e65c4e6ed1736126f9c7ee2fac23c8b52c1eb01a3e6a12
font_01_sfnt_off00007946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7946 10288 bytes
SHA-256: 4e22a34dbeb0aedea2c12797a82ab51f1a1e13ea6181972ee2069d1b3e7059d8

Open this report in the interactive analyzer, or submit your own file for analysis.