Malicious PDF — malware analysis report

Static analysis result for SHA-256 827086c66b932e6c…

MALICIOUS

PDF

40.1 KB Created: 2020-09-17 13:04:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 513a8e65211d189cb5d510cc1452af08 SHA-1: 354d3aadfc7f7c67f00c299faf2569459c20c424 SHA-256: 827086c66b932e6cb8b83a70223d4ece2173b5b91b7be459cc60e7e7dcca6dd5
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a significant number of external links, with one identified as a known malicious redirector. The presence of a link farm on disposable hosting suggests an attempt to manipulate search engine results or distribute malicious content. While no scripts were extracted, the structure and link distribution are indicative of a phishing or SEO spam campaign.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.me/wix?keyword=sin+city+deciples+mc+florida In PDF document text
    • http://files.bearvalleyanimalhospital.com/uploads/1/3/1/3/131381850/3719425.pdfIn PDF document text
    • http://zorefa.benjamindbrown.com/uploads/1/3/2/8/132814930/ce246324.pdfIn PDF document text
    • http://files.depedkabankalancity.com/uploads/1/3/0/8/130874090/gapenugulovokuxi.pdfIn PDF document text
    • http://vazibubus.belizehistorysjc.com/uploads/1/3/1/1/131163782/1300528.pdfIn PDF document text
    • http://files.wtfprintnz.com/uploads/1/3/0/7/130740517/judapebo_dovizomu_nijipi.pdfIn PDF document text
    • http://vifireg.canadianastatic.com/uploads/1/3/1/3/131383483/ratiwalamaxebalagir.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://1bdecc7c-4d40-4fca-ae72-54cdf1781662.filesusr.com/ugd/c8df25_4dd33128dabc4f6b846ddf34ae450e8a.pdf?index=trueIn PDF document text
    • https://efc4d397-5d8a-4bac-aee3-c5966bcf6f53.filesusr.com/ugd/3ce946_a297c562cd5d4a548b855275b6b623fd.pdf?index=trueIn PDF document text
    • https://ce2bd3f1-7a38-479a-968c-57316300d807.filesusr.com/ugd/8508de_e459bacfe26c4a9eb9f11e6907103d0a.pdf?index=trueIn PDF document text
    • https://70d6d9fd-b119-4faa-91bc-5bd02777a3d1.filesusr.com/ugd/07e02c_8ade1931969246ffac32d356b3fdca40.pdf?index=trueIn PDF document text
    • https://d8026418-aabe-4f6f-9769-f9d62c9c2cef.filesusr.com/ugd/724fb5_1dcee7ea933e406fa77fcd5bb0a210b6.pdf?index=trueIn PDF document text
    • https://8d291fb7-852f-4a3f-b29a-23aedd1a038b.filesusr.com/ugd/95bb70_96aa44f5d8b2428cb0077666659f14f5.pdf?index=trueIn 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_off00005d4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D4E 5508 bytes
SHA-256: d59b81d0b12416b2e9aabeeeaca8b36d7bb88a2af31f0b69fb68b463e3fb730a
font_01_sfnt_off00006ff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF9 10664 bytes
SHA-256: 166048886d0326798871831ab73d839ed959c72045ffbdc0ed8b0954040c92a0

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