Malicious PDF — malware analysis report

Static analysis result for SHA-256 175ad6742a8ba4d5…

MALICIOUS

PDF

37.1 KB Created: 2020-08-24 23:32:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8d108c5b8d071a9b1ed033437f9800f6 SHA-1: 61c9c719b48355fc2ec4be63c173625b5e5e5161 SHA-256: 175ad6742a8ba4d502f16319e00b252ea5eb1fc87a884ffe8cb662a90d1cc673
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to Shopify domains hosting other PDFs, but one prominent link leads to a redirector URL. This redirector is likely used to obscure the final destination, which could be a phishing page or a malware download site. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to manipulate search engine results or distribute content broadly.

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=carrera+slot+car+track+planner In PDF document text
    • http://files.failurefarms.com/uploads/1/3/1/4/131406826/9414637.pdfIn PDF document text
    • http://files.teohuwhaiao.org/uploads/1/3/1/8/131856247/1411074.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/1/0435/6410/5886/files/42522043742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/49380665078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xodujanizovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9825/1165/files/bluecoat_school_oldham_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8006/4936/files/15469848746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2018/0894/files/fefitajolubibukulema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7473/1685/files/91889420765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/86138152514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4193/8856/files/bosonto_ese_geche_song.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 2

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_off000046cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46CF 4756 bytes
SHA-256: 1564ef213886d75ed5310567f0cd517d7ba4eb16f126acd86a224334496d10c5
font_01_sfnt_off00005704.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5704 10172 bytes
SHA-256: a0ab8cf7991f2ffee43e74212e86057db071102b94278c011c95c8f40bfdfa42
font_02_sfnt_off000079d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79D0 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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