Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4c392189e232222…

MALICIOUS

PDF

72.9 KB Created: 2021-02-12 05:43:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 4ac0fb190e4384f67b644a75480b2b59 SHA-1: 6ccb9300a6933954cbe1e7701fb0aebf018c6010 SHA-256: f4c392189e232222e0e841517b8783156ff435b90a178dd89e9354e3da98d5a4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which are hosted on suspicious domains or use obfuscated paths, indicating a link farm or phishing lure. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan. While no scripts were directly extracted, the presence of numerous external links suggests the document is designed to redirect users to malicious sites, likely for further exploitation or credential harvesting.

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://jottigo.ru/123?utm_term=lean+canvas+pdf PDF link annotation
    • https://cdn.sqhk.co/wazilisiko/eb5FF0c/bozapikulenulajojoriki.pdfIn PDF document text
    • http://honey-love.ru/loader_bucket_for_sale_ontariovtxou.pdfIn PDF document text
    • https://cdn.sqhk.co/bigulikexupa/hahdRjd/3286906771.pdfIn PDF document text
    • https://cdn.sqhk.co/niripakexad/ihg8hfp/14907240824.pdfIn PDF document text
    • http://nonly.xyz/lexapro_davis_drug_guidekwckq.pdfIn PDF document text
    • https://cdn.sqhk.co/jujadiziga/giS3cjb/fobofeviw.pdfIn PDF document text
    • https://wijodemarivupi.weebly.com/uploads/1/3/4/8/134861972/56047b5a.pdfIn PDF document text
    • http://smartradiobf.ru/baluvubewelewinanz5zc0.pdfIn PDF document text
    • https://cdn.sqhk.co/rupomotiz/hAlmyhi/8_bit_music_maker_download.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/loneminovu/tanadanewamogesanivigarob.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/pectoralis_minor_stretch.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/jesus_loves_me_piano_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bufexa/86250241265.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_off0000e1f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F9 5020 bytes
SHA-256: 733c3a9a3b441be8616dd66c2f4b86a190b0f0b4e67b7ceb65b4a13292f2383a
font_01_sfnt_off0000f330.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF330 10852 bytes
SHA-256: 6793501075c08ca6ab1d9164db9e54cd58e0adb5553613b1d29292baa68b3646

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