Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4dd170e41f088d9…

MALICIOUS

PDF

77.4 KB Created: 2021-02-23 23:05:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 973553f19635f5bcc31cf0d3001f7e44 SHA-1: 2e65ce9a90e3509039447dd878f1c55fe08052ca SHA-256: e4dd170e41f088d9f2219f1a6a3420fdd93d7dccdba7c24f5f33888492261ae9
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one heuristic identifying it as a 'PDF_SEO_LINK_FARM' containing 30 links. The document body, though heavily obfuscated, suggests a lure related to 'Monster in law full movie hd online'. The presence of multiple unknown and potentially malicious URLs, combined with a high ML classifier score and ClamAV detection as 'Pdf.Phishing.Trojan', indicates a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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://maypoin.ru/wb?keyword=monster%20in%20law%20full%20movie%20hd%20online PDF link annotation
    • https://kunobile.weebly.com/uploads/1/3/4/5/134517695/9e9143586d.pdfIn PDF document text
    • http://e-devletodeme.net/526977853858lxw4.pdfIn PDF document text
    • https://jabevemejo.weebly.com/uploads/1/3/1/4/131483275/8166209.pdfIn PDF document text
    • https://zatakigufexip.weebly.com/uploads/1/3/0/7/130738978/2bfa0.pdfIn PDF document text
    • https://rofixuninapo.weebly.com/uploads/1/3/5/3/135313709/zonobaveliv_fedodoge_liwezakizo_luwuto.pdfIn PDF document text
    • http://gsmall.space/vojiv6gzs7.pdfIn PDF document text
    • http://nextauto02.ru/class_11th_biology_ncert_bookqz19b.pdfIn PDF document text
    • http://ejinaya.com/the_beautiful_and_the_damned_quotes_with_page_numbersztvvo.pdfIn PDF document text
    • http://semazolowogafoj.22web.org/vutebibuzivumekodejiju.pdfIn PDF document text
    • https://puvomowaja.weebly.com/uploads/1/3/4/3/134318832/xolofetidivod.pdfIn PDF document text
    • https://sebigazawipad.weebly.com/uploads/1/3/0/8/130814057/xuxus.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rilowoxex.rf.gd/operating_systems_life_cycle_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/41344781673.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/esl_emotions_vocabulary_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/42313890789.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/60775734364.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_off0000f2b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B1 5304 bytes
SHA-256: 2bf34b73b4cb748e5381c1990020563c3c70f8557d6cd49f60ede65498012649
font_01_sfnt_off000104b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104B2 10564 bytes
SHA-256: ebe9e0ced73d390f633f9e992d485c511adf1662f7730161ba9dee7f7e083d8f

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