Malicious PDF — malware analysis report

Static analysis result for SHA-256 aad9530d481de097…

MALICIOUS

PDF

81.6 KB Created: 2021-01-21 00:43:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 87663a57b9fe77eae1b47d1de9a79c57 SHA-1: c7f00e3a0d07c402862ff031e085ea49ee2a804b SHA-256: aad9530d481de0979d521c46f2c7d33dbef96a56e0cf0b2e42b95f318aac921e
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file is classified as malicious and contains a link to a known malicious redirector. The document's content, though heavily obfuscated, appears to be a lure related to a "Toro recycler 22 smartstow owners manual". The presence of embedded URLs and the ML classifier's high confidence score indicate a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 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://cctraff.ru/123?utm_term=toro+recycler+22+smartstow+owners+manual In PDF document text
    • https://static.s123-cdn-static.com/uploads/4417824/normal_5fcaec5360b48.pdfIn PDF document text
    • https://site-1166680.mozfiles.com/files/1166680/neon_car_online_game.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367925/normal_5f8b4da1e80a1.pdfIn PDF document text
    • https://tubolapibakosi.weebly.com/uploads/1/3/4/8/134872187/1838638.pdfIn PDF document text
    • https://site-1166749.mozfiles.com/files/1166749/zenobuwabamab.pdfIn PDF document text
    • https://tigidejuremu.weebly.com/uploads/1/3/4/5/134502839/a43603941021eca.pdfIn PDF document text
    • http://loxebosobudi.66ghz.com/mijanatifuwasamas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420239/normal_5fc1d99406a38.pdfIn PDF document text
    • https://site-1178921.mozfiles.com/files/1178921/15319086122.pdfIn PDF document text
    • https://lakafoxure.weebly.com/uploads/1/3/4/2/134266374/vodozed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490244/normal_5fb40b2d909b9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366331/normal_5ff51ebccf244.pdfIn PDF document text
    • https://site-1250681.mozfiles.com/files/1250681/sizulejitulun.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bisiziwaros.epizy.com/27584830214.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e43e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE43E 5220 bytes
SHA-256: e49f4fbdfed56308a49903d31f20c10c8071c913a813ab0a02abae35c4914edc
font_01_sfnt_off0000f601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF601 12032 bytes
SHA-256: 5262c9f8532099476fee8a56a2abbd2555879fc229399874ada619d3be61ddf4
font_02_sfnt_off00011e89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E89 18564 bytes
SHA-256: 6b812028dea8f6bcff5dc3bc262dc9e3a902dae3137e2909d872c7b0cd3f966a

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