Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e819837e7a319d9…

MALICIOUS

PDF

45.0 KB Created: 2020-08-09 20:57:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6d4880f86d78104aad33fa8a4ea35705 SHA-1: be4c3b0612a55c11c235293608286024d33ed273 SHA-256: 9e819837e7a319d963c5d9f2211a9f49e5d55392727d02a4c80a4cabd5d6d62c
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to a job application, suggesting a social engineering lure. The PDF also contains a link farm, as indicated by the PDF_SEO_LINK_FARM heuristic, which points to numerous other PDFs, likely for SEO poisoning or distributing further 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.cc/pify?keyword=job+application+letter+sample+for+teacher+pdf In PDF document text
    • http://files.veronicahallockart.com/uploads/1/3/1/4/131454264/zuliguvonelivi_vumed.pdfIn PDF document text
    • http://files.akaoxo.org/uploads/1/3/2/8/132816041/mefisade.pdfIn PDF document text
    • http://files.joolboxcreations.com/uploads/1/3/1/0/131070247/xabate-rovakuxub-wexoduvizuxi.pdfIn PDF document text
    • http://golosowe.jamesaodell.com/uploads/1/3/2/6/132681670/240338f66a.pdfIn PDF document text
    • http://semela.darlingyoga.com/uploads/1/3/1/4/131411896/ranibi_tadumafamezugi.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/1/0432/7063/5678/files/13985942380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/73431449884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4897/1938/files/understanding_ethnic_conflict.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3321/4621/files/duvozoni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4008/0021/files/zumawanamunopep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7960/5147/files/checklist_for_autism_spectrum_disorder_casd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2490/0515/files/nutikowigafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/85484739365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1828/0357/files/23336209574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/18542785953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2250/8447/files/66239999725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8871/4653/files/form_storm_norm_perform.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7923/6760/files/wifulozojenetowesowukaxin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1230/7618/files/laplacien_en_coordonnes_cylindriques.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64BC 5312 bytes
SHA-256: ba3014899da5936de5b962daaad6f2e1e493a88b6350ef7beae0bd1d83414bcc
font_01_sfnt_off00007683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7683 9976 bytes
SHA-256: aa58db1851544edeb966989b47663072895fb19fcc1ae1d9e9e8c93e0a230bbf
font_02_sfnt_off00009894.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9894 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378