Malicious PDF — malware analysis report

Static analysis result for SHA-256 e047f849f843c973…

MALICIOUS

PDF

81.3 KB Created: 2021-06-05 04:17:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b390db99374c854b1f89a81871b6fb32 SHA-1: ddc410c81b4e87c24f479f62a5b7b5fde199cae8 SHA-256: e047f849f843c9739e0da7229694508fa94e0377c13ccbbbf1e5e76e2b29b954
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 0.9998

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://wastran.ru/pbw?utm_term=short+throw+laser+projector+4k+review PDF link annotation
    • https://feposejixadolo.weebly.com/uploads/1/3/4/7/134744373/2259556.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408720/normal_5fca608279360.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389824/normal_601f83ccd0e75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413455/normal_605e21687a4d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486367/normal_600a791b3a039.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384839/normal_6045dff32acd9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387056/normal_6008450b58671.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421341/normal_5fd2ef4893477.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481841/normal_601b2e639faf3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498834/normal_604f2e1fe8c7d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446166/normal_5ff6062023b82.pdfIn PDF document text
    • https://likimipezerejo.weebly.com/uploads/1/3/2/6/132682052/mujerasonabedugige.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423757/normal_60baa0220d0b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449965/normal_6030289c50b48.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lexibitite.pbworks.com/w/file/fetch/144578838/jatopatugiruloronesola.pdfIn PDF document text
    • http://nanefumipopo.pbworks.com/f/javalelibupegefu.pdfIn PDF document text
    • http://bovojigu.pbworks.com/f/google_opinion_rewards_mod_apk_2021.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ffe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE9 5504 bytes
SHA-256: 52a22798ebf0f94894d2a9582c50f6d2bc5b842f7f2c0e8ac911cbb51f6cd7d3
font_01_sfnt_off000112ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112BA 10972 bytes
SHA-256: 2bd5f9c0a46b1ffa3cb595d82b847517ad80abd9b96048dc7686d8c330bece23

Open this report in the interactive analyzer, or submit your own file for analysis.