Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f8bc2cb29d5665a…

MALICIOUS

PDF

46.7 KB Created: 2020-07-29 08:53:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f023b32bf6757bd2fcc80ab17b469c2b SHA-1: c2e4aa2bc2acfeb76743688efcc1ef1c4c39d68c SHA-256: 1f8bc2cb29d5665aa56c383981eccc27c4f7611d4d88e11edf12c5f2390c7a86
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to 'geometry worksheets 3rd grade pdf'. The presence of a malicious redirector suggests an attempt to lead the user to a site that may host further malicious content or phishing pages.

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=geometry+worksheets+3rd+grade+pdf In PDF document text
    • http://files.speakupcenter.com/uploads/1/3/2/6/132681560/vadatopa.pdfIn PDF document text
    • http://files.kristynlanggundlach.com/uploads/1/3/1/0/131070702/laloloxepifo.pdfIn PDF document text
    • http://files.cascadiacenterformassage.com/uploads/1/3/0/7/130739326/3324872.pdfIn PDF document text
    • http://files.ncpsma.org/uploads/1/3/1/4/131437535/7b0f1e1b1144061.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/1/0437/0612/2393/files/32992151512.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/1/0428/9835/8432/files/4077026649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2284/4067/files/8342107843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7373/2768/files/33119472246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3614/5814/files/55700968619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6045/2760/files/93913843395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2068/1369/files/22809793349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wizivudid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8799/5807/files/sukalivitafepela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4196/4710/files/dozijusosaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3429/files/dokedimunobalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2216/3876/files/74423682555.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_off000078d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78D4 5508 bytes
SHA-256: 743fbdad6e2067d5afea4d151ae5722ab5164953aa56bd8b04ee1bafe4a3a106
font_01_sfnt_off00008bba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BBA 9924 bytes
SHA-256: 3a775c00e3dfbdd46b5e5972f29ea6aef0cda6e659e5d08d080ea390c6b16e90

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