Malicious PDF — malware analysis report

Static analysis result for SHA-256 2569c152a1298983…

MALICIOUS

PDF

61.3 KB Created: 2020-11-11 21:55:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e4fba1c908bd27c8f25d911a28eb49f2 SHA-1: 3670e4ec034bef2e9f0f2fd6a2859063d8399add SHA-256: 2569c152a1298983132f56c6acd4bae2b93f9dd5c14cceef89d9f1a07270aad9
156 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 0.9997

Heuristics 5

  • 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.
  • 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?utm_term=anth+film+songs PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453337/normal_5fa630d9313c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383128/normal_5fa4294b6b519.pdfIn PDF document text
    • https://molisemopum.weebly.com/uploads/1/3/1/4/131437834/xonunotefow.pdfIn PDF document text
    • https://rinumobepora.weebly.com/uploads/1/3/4/3/134377952/mozowaxefujukavilur.pdfIn PDF document text
    • https://mukozuzaze.weebly.com/uploads/1/3/4/2/134265885/2ab5c0522fe.pdfIn PDF document text
    • https://vonegulozezuxe.weebly.com/uploads/1/3/4/3/134371031/wowotozulolemomimaja.pdfIn PDF document text
    • https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/2830943.pdfIn PDF document text
    • https://xilevaxe.weebly.com/uploads/1/3/4/3/134391777/9251793.pdfIn PDF document text
    • https://nujawarasut.weebly.com/uploads/1/3/4/3/134310583/4271662.pdfIn PDF document text
    • https://dawanuma.weebly.com/uploads/1/3/4/3/134305997/rutizetejelo.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/jolituzoji/16941131192.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/alpsankhyak_form_mp.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/yugioh_deck_building_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/pho_vietnamese_menu.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/utada_hikaru_my_first_love_english_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/gym_american_fork.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_off0000b535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB535 4864 bytes
SHA-256: 78f4f1f436eb0885deddaeee7fed747829d25359fb93ff48463bf29bb119a205
font_01_sfnt_off0000c5ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5AC 10272 bytes
SHA-256: 5dd06cbd778e575533d7ea9dbbb813340413e3242edeaa03a19bb9ccd3bd2ff2

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