Malicious PDF — malware analysis report

Static analysis result for SHA-256 a95975d6f5cbed6d…

MALICIOUS

PDF

45.8 KB Created: 2020-08-08 01:20:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 418f194cc6c435e454f4df98d0fd934b SHA-1: 66e1ca42df9cb8686395d3983bb7abf170eeaf14 SHA-256: a95975d6f5cbed6d668f13840a3b12ff3692c641527e79b5d2132c5b5aa52f42
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of these links, 'https://ttraff.cc/pify?keyword=anorganick%25C3%25A1+chemie+housecroft+pdf', is identified as a malicious redirector. This suggests the document is designed to act as a link farm, potentially for SEO poisoning or to direct users to malicious content through the redirector.

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.cc/pify?keyword=anorganick%25C3%25A1+chemie+housecroft+pdf In PDF document text
    • http://files.eerankinart.com/uploads/1/3/1/3/131398097/tivubamexesup_mazimi.pdfIn PDF document text
    • http://files.geoffx.com/uploads/1/3/2/3/132302735/c210955b47bde8.pdfIn PDF document text
    • http://gafamuz.warwickownerscorp.com/uploads/1/3/1/4/131438641/rovega.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/1/0452/3737/1037/files/cardiopulmonary_resuscitation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0056/0803/files/tifetodofusiwogiroma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xazijejizamoketabuguta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5173/6471/files/94909105240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/redukenedobitaguwowok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7833/4117/files/potemipelilixakilenen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9480/9512/files/99250521038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4976/0421/files/the_beginners_keto_diet_cookbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3768/7962/files/17606638224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2966/6724/files/ffxiv_encyclopedia_eorzea.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4669/9165/files/77358290663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1202/1657/files/15190828829.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 1

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_off000072f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F8 5824 bytes
SHA-256: 07471f3ffca2e76fa2d0ee633ffd086c147fd9cc9f7f038cd01e5ed8b988169b
font_01_sfnt_off0000861c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x861C 10128 bytes
SHA-256: 78edee069ea9489f4417f7eec5724dde9497b3882442a98ee4e3fea9fa5d9b96

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