Malicious PDF — malware analysis report

Static analysis result for SHA-256 04ca0b05c13253af…

MALICIOUS

PDF

70.3 KB Created: 2020-11-14 06:55:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0e2bae5d26ce6ab444908f054ef84d5a SHA-1: d72c2a7c72a67864239ef7e0b279c142317e7933 SHA-256: 04ca0b05c13253aff46d8f34226f41e2a166afef21b486ab83558a8b06ef9f76
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://traffking.ru/123?utm_term=cva+optima+parts+breakdown PDF link annotation
    • https://sifasoralut.weebly.com/uploads/1/3/4/4/134488674/fb87db6b913.pdfIn PDF document text
    • https://xalusadi.weebly.com/uploads/1/3/4/5/134595224/1903991.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424376/normal_5f9d8736bd02e.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/8755772.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426556/normal_5fab780339925.pdfIn PDF document text
    • https://wilixutisew.weebly.com/uploads/1/3/4/0/134095986/nomuseba.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/tinezedu/best_bike_racing_games_for_android_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/98370567107.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/71095961655.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/aventura_1_workbook_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/nba_apk_games.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/consequentialism_vs_deontology.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/oxford_english_dictionary_download.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/wanufaroxiwaxuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54cf5b2d-5dea-4c32-8828-2421fc1b7546/43092837202.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/gawariv.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_off0000d3f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3F1 5332 bytes
SHA-256: c195f30c3fc88f2facce76eae88d5c5a2de7c5486f9c18b5abc31cf2b002d4c9
font_01_sfnt_off0000e606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE606 11444 bytes
SHA-256: aa4c178c21324a5c5dbc3a190725d72acb20b4e90cec7ea7a98a4077813081dd

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