Malicious PDF — malware analysis report

Static analysis result for SHA-256 89847ee293f12f82…

MALICIOUS

PDF

80.9 KB Created: 2021-03-29 05:09:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ed43a50b875151b3b43e9f5d594ea610 SHA-1: 730a60e6b848cf6cf76844504ca019d09ee541c5 SHA-256: 89847ee293f12f820b6587c95882e39b61f130b0541437e055c70e5c107855ac
186 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 ClamAV and 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 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://bologen.ru/wix?keyword=camino+de+yemaya+agana+eri PDF link annotation
    • https://cdn.sqhk.co/pavuraxutem/RLahh1x/hex_empire_2_free_online_games.pdfIn PDF document text
    • http://nozijepirag.22web.org/wuvegobuxarevitotag.pdfIn PDF document text
    • http://tetiviguxawik.getenjoyment.net/widejefe.pdfIn PDF document text
    • https://cdn.sqhk.co/wepigosogo/Jggqoja/nopolofosi.pdfIn PDF document text
    • http://jinevul.mygamesonline.org/pojixurizoxuzatuxeminuz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://texatutegelemov.rf.gd/gopro_4_black_battery_bacpac.pdfIn PDF document text
    • http://dusexere.epizy.com/8776146122.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bb711f8-62f8-4590-9371-75779839a81a/computer_repairs_prices.pdfIn PDF document text
    • http://fadepuluweg.rf.gd/33140411199.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76f1814e-0205-490b-9c15-7f449da6ab6c/7381903889.pdfIn PDF document text
    • https://356bbf58-84af-4bff-99a9-d03346e46411.filesusr.com/ugd/b5472a_90cad851b4264846878b5771220d7d09.pdf?index=trueIn PDF document text
    • https://a0bbd489-bf03-48a0-8e93-88abd0751e5b.filesusr.com/ugd/370ea2_f337cf93febd4c6190cb6d411f6d8e46.pdf?index=trueIn PDF document text
    • https://ce83042b-5faf-46b5-bcbb-9b4d05ec7d33.filesusr.com/ugd/a31856_12d6a2caa78541d0bc0a7ee39e91d3c0.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bcc5753-564d-4987-b061-cc2a69446d38/86613632570.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/815a8b9f-3484-4226-a572-de8bd9e99cef/9840597407.pdfIn PDF document text
    • http://vimitafukufes.rf.gd/best_bible_study_books.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_off0000fdd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDD5 4940 bytes
SHA-256: 4d9da450c04b38e873c399644ec695a1610426e65b4804a3840073c3f09e5bbe
font_01_sfnt_off00010e96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E96 12616 bytes
SHA-256: f3ad1ace3fa2c5e85b511ceb0e17b935c45b4a26b70ea7a2c73861e75669a37c

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