Malicious PDF — malware analysis report

Static analysis result for SHA-256 52e0d456b817a9b8…

MALICIOUS

PDF

39.8 KB Created: 2020-11-06 12:54:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: cdf157b8f2906ae5b95b241c7d36baf3 SHA-1: 13a2410025dfd5ecc7f41b37a2f48bb2944a0e35 SHA-256: 52e0d456b817a9b802af910825224e6633779c8a89df6481095786f120583249
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged by a machine learning classifier as malicious. It contains a large number of embedded URLs, many pointing to disposable hosting services and a known malicious redirector. The primary purpose appears to be SEO manipulation or redirecting users to potentially harmful content, rather than delivering a direct exploit.

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://ggtraff.ru/strik?keyword=lay+down+beside+me+by+don+williams+youtube In PDF document text
    • https://wudizibi.weebly.com/uploads/1/3/4/4/134477582/wakarid.pdfIn PDF document text
    • https://detasove.weebly.com/uploads/1/3/4/5/134594091/bomaja-vafijidik-nenuzejevamora-gixafatep.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/nexofobe_dukan_nonozaguref_jubegesasipofaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369495/normal_5f96739cd58a6.pdfIn PDF document text
    • https://kiwusaxanasatip.weebly.com/uploads/1/3/0/7/130738973/1935377.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411696/normal_5f9733ff2f876.pdfIn PDF document text
    • https://gogebuzavoriro.weebly.com/uploads/1/3/2/6/132681212/wizizavodi_gonilulenazerof_soleso_matisufatas.pdfIn PDF document text
    • https://vafumigoku.weebly.com/uploads/1/3/1/3/131384305/salixinefavaj-tokamob-zasatuzevusat.pdfIn PDF document text
    • https://niliwuwez.weebly.com/uploads/1/3/4/2/134265541/8c7d78c04c.pdfIn PDF document text
    • https://saxuvelimeno.weebly.com/uploads/1/3/4/4/134480096/2502a9d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4312/7447/files/le_dimanche_des_mres_graham_swift.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7194/4887/files/jujenadatexowigitapakida.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FC0 5032 bytes
SHA-256: 46bfc5aa28edbdffc59782fc53aea73d0cefd4a6be15e2095827ca16f141c88b
font_01_sfnt_off000060e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E0 10376 bytes
SHA-256: 5f1a4f70ba26191eb1a9f98d4c83d1c0149bcb2819d4a7414ee75ca30fbbb69d
font_02_sfnt_off00008468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8468 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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