Malicious PDF — malware analysis report

Static analysis result for SHA-256 f32e695349362e1d…

MALICIOUS

PDF

63.2 KB Created: 2020-11-04 07:38:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 17fe0b6daf847dbddd5e0400bd6abcef SHA-1: b806445a1c1be7cc93399112a2e6d2c8c7e98cc7 SHA-256: f32e695349362e1dcbd142730e76c9ce680c820042732e9c1e276498b5b6b943
192 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded links, many pointing to disposable hosting and redirectors, indicating a link farm or SEO spam operation. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though partially corrupted, contains text related to 'Spider-Man trophy guide' and URLs, suggesting a lure to trick users into visiting malicious sites. No scripts were extracted, but the overall structure and link farm behavior are indicative of malicious intent.

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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/aws?keyword=spider+man+trophy+guide+and+roadmap In PDF document text
    • https://gurigibafex.weebly.com/uploads/1/3/0/7/130739571/xovefirebe-dikuxepixazo-lovojulobena-perugusopi.pdfIn PDF document text
    • https://bubiwodepu.weebly.com/uploads/1/3/2/8/132815961/6332635.pdfIn PDF document text
    • https://netopanuneju.weebly.com/uploads/1/3/4/4/134493403/f3a37a05512.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371014/normal_5f926ec21fee3.pdfIn PDF document text
    • https://buveziketi.weebly.com/uploads/1/3/1/3/131398526/a0fc8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412380/normal_5fa231697c16a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420454/normal_5f99ed98dbc01.pdfIn PDF document text
    • https://japiloxekafu.weebly.com/uploads/1/3/4/4/134480389/zelibifofeminonit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366389/normal_5f87428ba8049.pdfIn PDF document text
    • https://lupigufenof.weebly.com/uploads/1/3/4/5/134509144/mudofomem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/91497466723.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/jekipuwakoribibufu.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/ias_botany_syllabus.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA292 5368 bytes
SHA-256: a1b732c900a8b0280f3a81d43725b6d687ec352fe122839068f4565e419e3c70
font_01_sfnt_off0000b4af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4AF 11076 bytes
SHA-256: 812f0c806426bcad1639f15c30cedfdfaee391be368a9d683f5d1428a025b0d7
font_02_sfnt_off0000da9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA9E 16068 bytes
SHA-256: 5338b60dac2ddcc9fbf81734882903060897ff8c18563aad6864a581beec55c6

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