Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a75cd0c657c2545…

MALICIOUS

PDF

39.6 KB Created: 2020-08-19 22:52:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 46f34be928d6c24f51183b006fe81dff SHA-1: c7e1ae92e38efad6a67cad643906bc688651d570 SHA-256: 0a75cd0c657c25459a4289da065a7c74e40f62bb62e09c4a0fc48dbddbd1374d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of a link farm designed to manipulate search engine results. The primary malicious indicator is a link to `https://ttraff.ru/pify?keyword=businessman+sir+osthara+video+song`, identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious content under the guise of a video song.

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=businessman+sir+osthara+video+song In PDF document text
    • http://files.natureworld.com.au/uploads/1/3/0/9/130969965/59695dfd29f25.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/1/0435/1374/1471/files/care1st_prior_authorization_form_san_diego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4356/1376/files/dotixarejuxazavuliti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3256/4132/files/31521303511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4913/9880/files/12688513189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7955/5486/files/79971825589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9168/0673/files/dawoodi_bohra_marsiya_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/36394511905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32732230761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5757/8137/files/49964418464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0326/3645/files/bemutosafawutalivuwibog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2341/8019/files/vegese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/1814/4155/files/39153444079.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000046a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46A6 5196 bytes
SHA-256: 7073ee5bdb5dd741069b335d75c59d29e66e5f2c28e3f98ac83aea32ad5521b8
font_01_sfnt_off0000581f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x581F 13916 bytes
SHA-256: e23dadcc063377cc6b338ff215733ca637bf85fcc7a1df7f03058fed835665b8
font_02_sfnt_off0000837b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x837B 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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