Malicious PDF — malware analysis report

Static analysis result for SHA-256 15de4175e47bb311…

MALICIOUS

PDF

43.7 KB Created: 2020-08-07 12:40:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5a2658e61f8608091e18830b2aa8ef07 SHA-1: 1fc6fd12c569d0600a465c86415d9f16f5b943bb SHA-256: 15de4175e47bb31173b5361a8e4cde3025da8d5b814e1a4bced6321788a87979
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, indicating a link farm or phishing attempt. The primary redirector URL is https://ttraff.ru/pify?keyword=difference+between+restricted+earth+fault+and+differential+protection+pdf, which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL and other benign-looking Shopify links, suggesting a lure for users to click through to malicious infrastructure. The ML classifier strongly supports the malicious verdict.

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=difference+between+restricted+earth+fault+and+differential+protection+pdf In PDF document text
    • http://files.creekdebate.org/uploads/1/3/1/3/131380915/468ff.pdfIn PDF document text
    • http://wawikomut.thecommonstheatre.org/uploads/1/3/1/6/131637136/4931930.pdfIn PDF document text
    • http://files.upliftedforlife.com/uploads/1/3/2/3/132302940/6227050.pdfIn PDF document text
    • http://files.graffitiwgratitude.com/uploads/1/3/0/7/130738814/808e7b1556b9ad.pdfIn PDF document text
    • http://files.johnvukusic.com/uploads/1/3/1/3/131380031/c3ab01de1d6896.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/1/0427/5575/2103/files/drugs_abbreviation_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/66089594102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0108/5082/files/7502453462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7213/5074/files/79017933949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/mevizabagewewobedakugexog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5804/4827/files/bamoraremeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0088/9507/files/archimate_certification_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5064/8223/files/40953763978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/tazinalirafarorekugis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1503/5288/files/36703947281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7014/4166/files/viviwomimemav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9910/9016/files/tenafutedinuzisolatod.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_off00006d1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D1D 5472 bytes
SHA-256: d9118947e5e8658eb6cebc1dcc7df35dd238b26a16e5174dd9fb73af77d069ca
font_01_sfnt_off00007fca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FCA 9796 bytes
SHA-256: e10e6ecd4045eda2787e3925e48ca2561cae5946e0161978cb93b03bf6b0c544

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