Malicious PDF — malware analysis report

Static analysis result for SHA-256 359ac2ab789ba829…

MALICIOUS

PDF

33.1 KB Created: 2020-09-18 20:17:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e24e37dfa5cea49d2480d69f05fe80d1 SHA-1: d539bd8c0fe78e964c44db1f09afcc5d83e943f3 SHA-256: 359ac2ab789ba829ff24fb9cd63b44a5bd743286e4270d45cedc59f7d3e0b594
184 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to known malicious redirectors or link farms designed for SEO manipulation. The document body, though heavily obfuscated, contains a URL that matches the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic, suggesting a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

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.link/wix?keyword=sporcle+sia+puzzle+hunt+supercomputer+answers In PDF document text
    • http://getosa.wekeepyoumotivated.com/uploads/1/3/0/7/130739287/6037708.pdfIn PDF document text
    • http://files.jakob-israel.com/uploads/1/3/1/4/131454523/pigodizaxonejafu.pdfIn PDF document text
    • http://juxidoxo.zbsbatmitzvah.com/uploads/1/3/0/7/130740044/gojovewulo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0557b271-56f0-49da-ae49-208ea94b6ed3.filesusr.com/ugd/2ddd39_3d11d9a3b8394220ae0e686a4b23705b.pdf?index=trueIn PDF document text
    • https://bab39ee1-aebf-4638-b99a-25811b3f200a.filesusr.com/ugd/9904c2_38921ced64b142738639b597ce5cbac6.pdf?index=trueIn PDF document text
    • https://39417a38-31bb-42b5-8c6c-d7d1d43c142c.filesusr.com/ugd/bd1c09_5eb0bfbdba944039a4c7447ba4fc92cc.pdf?index=trueIn PDF document text
    • https://0ef0c9ca-5850-48b5-9c41-e6150aa1bb75.filesusr.com/ugd/20d83a_2bdfe610524548c8a95ed23f6248c660.pdf?index=trueIn PDF document text
    • https://abd83e1a-732c-4d37-b6f3-afed68e33dff.filesusr.com/ugd/882da0_1360146ff3a44b209e0ccd06b8f763de.pdf?index=trueIn PDF document text
    • https://140592d2-54fd-404c-a5e4-a4a83e97d1dc.filesusr.com/ugd/96768c_a62e0dfb3af4436fb664cc2255a2f389.pdf?index=trueIn PDF document text
    • https://238aac5e-f152-46d6-9966-611a2a77e034.filesusr.com/ugd/575fb0_d10f9bd7d50b47d7964be63cc5e56e61.pdf?index=trueIn PDF document text
    • https://2941b76e-debe-4874-b11b-6616b923e0e6.filesusr.com/ugd/09c3c7_e2725d692c634837a59952696995c318.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7727/1713/files/barabobitumekalala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8564/4454/files/tanatologia_infantil.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_off0000435b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x435B 5420 bytes
SHA-256: ba6169067e1acf768c2f0146487198e465d2d126cc197589552b9cd88a9f2cec
font_01_sfnt_off000055b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55B4 10000 bytes
SHA-256: 0df10404f4dc338b52b98518912ba1bdefa3a1dcd8be1fc60cd30938388ca589

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