Malicious PDF — malware analysis report

Static analysis result for SHA-256 874e3ab5d288a94a…

MALICIOUS

PDF

39.2 KB Created: 2020-08-12 07:52:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5dc89146cff9fe3f50bec88fd6ea4da6 SHA-1: 3884bdca61716ea9e9e419d6be69812baa7965af SHA-256: 874e3ab5d288a94ab4e344bae882f67c7e36478d420d10f59f8f23a21465c119
234 Risk Score

Malware Insights

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

The PDF document contains numerous links to SEO-optimized redirector domains, including a critical finding of a link to a known malicious redirector. The document body itself contains text that appears to be SEO-optimized content, further supporting the lure of a free download. The presence of a 'powershell_create_admin_user.pdf' filename in the document text suggests a potential secondary payload or further malicious activity, though no scripts were directly extracted to confirm this.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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.com/pify?keyword=headway+elementary+third+edition+workbook+pdf In PDF document text
    • http://files.holistic-research.org/uploads/1/3/1/3/131383284/fatunogeno-dubefupapetaf-xuxibufu.pdfIn PDF document text
    • http://files.lux4light.com/uploads/1/3/1/4/131407918/vexevupimetoti-fepuwaga-gepugiz-junugupore.pdfIn PDF document text
    • http://files.horizonmusicedson.com/uploads/1/3/1/4/131437834/gotuvulifopawu-geluxevedaku-pusefewajud.pdfIn PDF document text
    • http://buloma.deanvukelicstonemason.com/uploads/1/3/2/6/132682897/dujolegufoloj-nidevoriwegom-tetajeso.pdfIn PDF document text
    • http://files.purelyinbound.com/uploads/1/3/1/3/131398231/kadesukewab.pdfIn PDF document text
    • http://files.holistic-reseaIn macro / runtime command snippet
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3064/1829/files/nifula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3139/1396/files/13040009821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2335/1458/files/juraxutagorizogabipofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/tobasuvopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5238/3904/files/windows_10_powershell_create_admin_user.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0357/5454/files/popcap_games_alchemy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7896/7703/files/lugukino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9770/2046/files/vagukanipepetutalovix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/dexilesituxiwetade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3545/9738/files/mubibubakag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1280/0168/files/urbanisasi_di_indonesia.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
🗂 Part of campaign: elizabethbaumanart.com 4 samples

Related samples 8

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Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004644.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4644 5464 bytes
SHA-256: 1768ebb02dd4428912cf30c114b0b667e0c6ac4d58885ed0fc62163fd1c83fd6
font_01_sfnt_off000058b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58B9 9736 bytes
SHA-256: fd472165ea21af1bafc2f05067ac6c9e669f46a5777e7c6b4b2ef2c288ef19c1
font_02_sfnt_off00007a3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A3E 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

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