Malicious PDF — malware analysis report

Static analysis result for SHA-256 09e262958988821d…

MALICIOUS

PDF

42.5 KB Created: 2020-11-06 19:55:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 57dbcc6f9996c9cc17307068c1b83114 SHA-1: d5d778c2441a254ac7df1cae916b7fac2551e4aa SHA-256: 09e262958988821d74a81d77031594e0bbb23f51d431c42f671d1f8587cdbff1
96 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 as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffnew.ru/aws?keyword=walkers+game+ear+products+review PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367938/normal_5f8d3a871548c.pdfIn PDF document text
    • https://vafumigoku.weebly.com/uploads/1/3/1/3/131384305/tejiriwozaleriluz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392661/normal_5f9c7ab70e7eb.pdfIn PDF document text
    • https://valoxapemep.weebly.com/uploads/1/3/4/3/134305175/lalerabironitorimod.pdfIn PDF document text
    • https://xomevore.weebly.com/uploads/1/3/4/3/134346529/pukefexaruwage_radul.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/nawuvud/72925172046.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae32ab70-a4b8-4968-ab9c-8db3d8c08fea/jofobakumajafemivo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3760bcb0-0321-4a37-8d12-f79a66cd93e1/19016178319.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adcb41cd-8e89-47a3-9225-85c93958597f/geguto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f71d71d4-f5f5-4f13-98e7-f2077de9125c/hulk_wallpaper_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/madison_county_fairgrounds_madison_ne.pdfIn PDF document text
    • https://wotenopofe.files.wordpress.com/2020/11/budixaw.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/gexixedorifepujavaduguwe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2961c460-2849-48a5-bb68-4ebdd21c4901/english_language_arts_literacy_the_red_badge_of_courage_answer_key.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_off00006689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6689 5624 bytes
SHA-256: 83b96d57892b3a0b2e277b0da4fa0eefbad8caeed3ad868194e3719e1b475600
font_01_sfnt_off000079b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79B4 10300 bytes
SHA-256: 78d3d013223e00446838ba4d38fe2769a96863308bccc968d586fd2b275db02b

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