Malicious PDF — malware analysis report

Static analysis result for SHA-256 1970ea1951e999ce…

MALICIOUS

PDF

35.3 KB Created: 2020-08-23 13:42:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1268ad485b99a8e3dfcb0f13cf424bff SHA-1: 5ea2ce6a13a829cbbe618d3455300597fb306ad1 SHA-256: 1970ea1951e999ce88363348649a0e0dbeafb6fd85f4aa4d47908fbe92ecb843
194 Risk Score

Malware Insights

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

The PDF contains a deceptive title and embedded links that lead to a redirector service, which in turn points to a malicious URL. This pattern is indicative of a phishing or scam attempt, likely designed to deliver a secondary payload or lead the user to a fraudulent site. 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=best+cards+against+humanity+questions+and+answers In PDF document text
    • http://zovefi.tjsewnsew.com/uploads/1/3/1/4/131408970/vopipew.pdfIn PDF document text
    • http://files.memoriescharcoalhouse.com/uploads/1/3/2/7/132710669/5511489.pdfIn PDF document text
    • http://vavul.theventure.blog/uploads/1/3/1/6/131606490/lalereseb.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/1/0435/8710/9023/files/jiguwidadidulipepun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7370/7925/files/senikudomorujow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4098/7543/files/zagekodojuxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6053/5196/files/sevira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1615/9395/files/58887455316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/the_sociology_of_health_and_illness_nettleton.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2200/7965/files/cholesterol_test_procedure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58933331969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/32771172400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5696/2465/files/30395588492.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B73 5688 bytes
SHA-256: b19a34402484ad01d222a99bb4a9c01f9dd52613955f5f0fae09cf66ffa48a26
font_01_sfnt_off00005eaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAA 9908 bytes
SHA-256: abe9616ba8828e5e8a441e0b3fbcc9405a4974d8e2efd3fd9358373487b49c13

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