Malicious PDF — malware analysis report

Static analysis result for SHA-256 9abf6f3de764ad57…

MALICIOUS

PDF

47.4 KB Created: 2020-08-08 22:58:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6305edc8c590922a2d5595d950edeb0e SHA-1: caf6fd636dd23da38d7df1e7b6011127040421bf SHA-256: 9abf6f3de764ad5732e084a5dced795e6b2d6629491aaa810d86bc7a4a3c37f4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains embedded links that redirect to a malicious URL, disguised with a seemingly innocuous keyword. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of the redirector. The document body, though heavily obfuscated, contains the target URL and a keyword suggesting a lure for users seeking health information. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many pointing to Shopify, likely to improve search engine ranking for the malicious content.

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=height+and+weight+chart+in+kg+according+to+age+pdf In PDF document text
    • http://files.mohicounseling.com/uploads/1/3/1/4/131453870/7534153.pdfIn PDF document text
    • http://files.martindewittfinearts.com/uploads/1/3/1/8/131856158/kememadosozimod-pisofotizu-mezedefob-defepiliso.pdfIn PDF document text
    • http://files.iwstreecare.com/uploads/1/3/2/7/132740479/wogupu-zukokitoruwogog-zikezugufada-pubuzesilas.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/1/0428/4933/7507/files/magnum_pi_ringtone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3206/7739/files/basaxovovowokuguxezunane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5590/6973/files/11134813010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4215/8245/files/zatazegulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9940/5979/files/vusinamoti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9382/6463/files/23324288144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fuwofomakilaxenifotet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6565/4946/files/architectural_drafting_lessons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8454/6209/files/vijamavapewenoligag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7737/8972/files/riradofuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81988232477.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E18 5112 bytes
SHA-256: 4727ff331b24f7ade6057348a70dd410da4b9850d555603e42b45bedac8d548a
font_01_sfnt_off00007f7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F7E 10136 bytes
SHA-256: e23842b3c86def936fd9731a96e70dda44d21df7511e370cbb2128efb39c9541
font_02_sfnt_off0000a214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA214 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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