Malicious PDF — malware analysis report

Static analysis result for SHA-256 c71264b79ce8e33d…

MALICIOUS

PDF

49.7 KB Created: 2020-08-19 07:38:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3bfe34a1330bd12c7bc3b7dd52991f80 SHA-1: 5ce31fd30c4bfa4be7b7072df5247953376e02af SHA-256: c71264b79ce8e33dac2b70d9b0f4de10a173c5ec23fd147eed000bcf700e4627
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The primary malicious link, 'https://ttraff.ru/pify?keyword=casio+hr-+100tm+user+guide', is identified as a malicious redirector. This suggests the document is designed to lead users to malicious sites, likely for further exploitation or phishing.

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=casio+hr-+100tm+user+guide In PDF document text
    • http://votepu.erinridgeaalhoa.com/uploads/1/3/0/7/130775971/6953890.pdfIn PDF document text
    • http://files.pennybrumbaugh.info/uploads/1/3/0/8/130874489/aca00a2.pdfIn PDF document text
    • http://nogax.murraydopking.com/uploads/1/3/0/8/130814328/weseriwipunesevo.pdfIn PDF document text
    • http://wuxiparo.hiphopprinciples.com/uploads/1/3/1/3/131381518/9772647.pdfIn PDF document text
    • http://fejujivek.brandtmarineinc.com/uploads/1/3/0/7/130739615/4248737.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/1/0433/8260/3927/files/98882460839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9277/8901/files/zeparorogirazosikoxilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7441/0909/files/post_office_building_plan_drawing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9898/6909/files/vebezivolewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tadigepulimo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0151/2090/files/jusimumeboranepinikativo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5706/1788/files/befabikonififimor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8926/4794/files/buxejado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4132/4184/files/tewazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/4558/8887/files/27820653546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1294/0188/files/82266389217.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_off000084ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84BA 5336 bytes
SHA-256: 885e40d96111d854985e40851bd8c395c63f7bd67dd4647b6aaea5cc996c2db1
font_01_sfnt_off000096bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96BF 10428 bytes
SHA-256: 193204c4527bc9401587e2638aed75bfc531ff05672fe80b437713afc1fac5bd

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