Malicious PDF — malware analysis report

Static analysis result for SHA-256 03ae2e15b393a308…

MALICIOUS

PDF

61.0 KB Created: 2020-09-18 16:29:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 50c99dca14df904c94ed18be75011769 SHA-1: 9c5716721e63e7d315930507fc65bb0dd3b00f4e SHA-256: 03ae2e15b393a30850f26c3fb658510b6c1e17f9af16d99e880781a2262d97f8
184 Risk Score

Malware Insights

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

The PDF document contains embedded links that redirect to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though partially garbled, contains the text 'Light and dark reactions of photosynthesis' and a URL that aligns with the heuristic findings, suggesting a lure to a malicious site disguised as educational content. The presence of numerous external PDF links further indicates a link farm designed to distribute 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.
  • 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=light+and+dark+reactions+of+photosynthesis In PDF document text
    • http://files.ahgu.net/uploads/1/3/2/3/132303035/6713405.pdfIn PDF document text
    • http://files.halasboutique.com/uploads/1/3/1/4/131453436/nuduzujod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d53ae7b9-89a6-43c4-8165-5401c067f9b2.filesusr.com/ugd/0f5b72_fa91744e7b3c4bfc842d1abe197ddd21.pdf?index=trueIn PDF document text
    • https://8ff1c14b-ed75-4236-8bfd-e760cd249e60.filesusr.com/ugd/23b571_570eede4563d4d15ab6e234c466418cc.pdf?index=trueIn PDF document text
    • https://859f0b37-9130-401b-86f9-7b86f34ad822.filesusr.com/ugd/d99ef3_7a8342db7f454e65bbfb37763d752fda.pdf?index=trueIn PDF document text
    • https://c824d009-09ce-4103-9cb4-62b7b6756eae.filesusr.com/ugd/b926a8_f5860d6a88734cb196ee655ffa6ad633.pdf?index=trueIn PDF document text
    • https://da5c66bb-b8e3-48c3-9a28-712c23704087.filesusr.com/ugd/9f69bd_bb9b7a74d195426e8ea1a8ffcd479026.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/6439/4663/files/fizobalivaribukefipukujip.pdfIn PDF document text
    • https://a56fe6c0-a7a1-4de6-97e0-f2f3cc50daaa.filesusr.com/ugd/29c71c_737f4da4742b4611ac7693c7e9f59c2c.pdf?index=trueIn PDF document text
    • https://3d095396-bba6-4de7-bd6b-fcf898508cb0.filesusr.com/ugd/7cefa9_e91b2a51bc1b4f66be9299c50db71c37.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 4

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_off0000b0f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0F4 5492 bytes
SHA-256: ab2c4976db36cded71718659d3cca12ae4e8a31ee6ac2df1b23a2d2901795ef8
font_01_sfnt_off0000c3b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3B2 10444 bytes
SHA-256: e63abba524c14f720770b1abaac8c470db3cf7acd052579701d7a0ba7f91b00a

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