Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ba79af72c394176…

MALICIOUS

PDF

76.1 KB Created: 2021-06-01 06:36:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63ead86492bd6c281c70629b0a38590a SHA-1: 7b9be6fd18996a9f227a22a874cf94c2758f206f SHA-256: 1ba79af72c394176cf98d11b15e16b8fc73b3cdc63e91eec465f4aaceea79cfb
156 Risk Score

Malware Insights

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

This PDF file contains numerous external links, a common tactic for SEO spam or phishing campaigns. The 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics strongly indicate malicious intent. The embedded URL 'https://krisoc.ru/pbw?utm_term=the+secret+life+of+pets+2+full+movie+in+hindi+watch+online+hd' appears to be a lure, directing users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://krisoc.ru/pbw?utm_term=the+secret+life+of+pets+2+full+movie+in+hindi+watch+online+hd
    • https://lewumirobubav.weebly.com/uploads/1/3/4/7/134762292/f2783958.pdf
    • https://static.s123-cdn-static.com/uploads/4385648/normal_5fee1168a5004.pdf
    • https://cdn-cms.f-static.net/uploads/4446168/normal_606e2ad0591e7.pdf
    • https://cdn-cms.f-static.net/uploads/4426408/normal_603539c9066f0.pdf
    • https://static.s123-cdn-static.com/uploads/4455914/normal_5ff660e61f94a.pdf
    • https://zefilezagomi.weebly.com/uploads/1/3/4/4/134474677/c6cbef426a0cbc8.pdf
    • https://cdn-cms.f-static.net/uploads/4372972/normal_605f7ede654ff.pdf
    • https://penotogales.weebly.com/uploads/1/3/1/4/131438478/jibafikozuze_favewo_wafederetagu.pdf
    • https://cdn-cms.f-static.net/uploads/4417534/normal_604bbf6870b24.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://supatibu.pbworks.com/w/file/fetch/144418026/repabavigikubilesi.pdf
    • http://vatojorisa.pbworks.com/w/file/fetch/144437820/mahabharat_star_plus_songs_download_audio.pdf
    • https://uploads.strikinglycdn.com/files/d925a461-7306-456c-a3e9-8d71a0cf44ea/vejawuke.pdf
    • https://uploads.strikinglycdn.com/files/beac03ac-4b39-4119-8496-cf73de18d0d6/what_is_the_formula_for_compound_interest_in_excel.pdf
    • https://uploads.strikinglycdn.com/files/b552cbb8-6725-449a-99fe-44e5623b0e31/24072759991.pdf
    • https://uploads.strikinglycdn.com/files/2368cf8f-299f-41a5-a40a-3671a67f08e2/how_much_is_a_pool_cleaning.pdf
    • https://uploads.strikinglycdn.com/files/888be278-64b0-445c-a6ee-79b4c67a11d8/how_to_replace_water_softener_filter.pdf
    • https://uploads.strikinglycdn.com/files/b077da21-4646-48aa-babc-e425617c3c82/99916383312.pdf
    • https://uploads.strikinglycdn.com/files/d699677f-d2d4-4dba-bb81-0da50b060f22/momaxivefidomaliti.pdf
    • https://uploads.strikinglycdn.com/files/840a05f3-a328-451a-8b12-736278d453d0/61743915015.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9e8.bin
e4ded2dc5fe22b325e67b45df3165d160ba7520e354e1135fd9fcdb114871116
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E8 5628 bytes
font_01_sfnt_off0000fcf7.bin
5073c39f0dc937a801e5e2191370f6904b507d202d9a7a44b3ad81dde2475158
pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF7 10504 bytes