Malicious PDF — malware analysis report

Static analysis result for SHA-256 aabeecb0b832a3ed…

MALICIOUS

PDF

33.3 KB Created: 2020-08-26 03:31:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eb5a7e5dd9c89d6888056894740dc64e SHA-1: 7c721a9bfe201d52ee7884f0ef5fe62f5417fe51 SHA-256: aabeecb0b832a3ed2fe059759d59ab3ce8a6e6b24473d56c12ae1103a93010b0
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'worksheet 6 identifying and using active and passive voice answers' and the malicious URL. This suggests a social engineering attempt to trick users into clicking the malicious link, likely leading to further malware delivery or phishing. The ML classifier strongly supports the malicious nature of this PDF.

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=worksheet+6+identifying+and+using+active+and+passive+voice+answers In PDF document text
    • http://sibup.e3adventuresports.com/uploads/1/3/2/3/132303382/zumeso.pdfIn PDF document text
    • http://files.breathelaughlove.com/uploads/1/3/0/7/130738652/fd6a64f4.pdfIn PDF document text
    • http://lilegi.allgranitesarasota.com/uploads/1/3/1/6/131636855/lepezojizepa-mojurekudasepo-waposo.pdfIn PDF document text
    • http://liriw.nicholasreyniers.com/uploads/1/3/1/6/131637814/vizupo.pdfIn PDF document text
    • http://files.kevmol.com/uploads/1/3/0/7/130775607/8447805.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/1/0427/7708/4070/files/vatokugubumarote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2607/8106/files/54404577076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/dujilipu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4841/6933/files/87929968871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6789/2131/files/sabulibovudobumozuxux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7151/8373/files/4978278529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/xisudidizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6781/0726/files/foxiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8990/3259/files/vikerenavivuboguzurewelaf.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_off0000442e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x442E 5872 bytes
SHA-256: 81dc9ba1270b92958970740451ed3b9aef07778d2db58aee8edcacad413f20f2
font_01_sfnt_off00005850.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5850 9256 bytes
SHA-256: 58567704b729d2825de21a1bc3b75009e37139915e87b81d33f8ca75544b5b08

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