Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0044faef68df389…

MALICIOUS

PDF

77.3 KB Created: 2021-04-24 14:20:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: a4214804a4f56051198aa1f74beea73d SHA-1: 22dd2b0b708620708c4b16b1909b61426a4a31db SHA-256: d0044faef68df389d9aa35272a05829f8d0bc7a51428bcdcf6e0e0c003601455
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 point to PDF files on suspicious domains, indicating a link farm for SEO manipulation or phishing. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and extensive external linking are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/strik?utm_term=m-audio+fast+track+usb+mk2+driver PDF link annotation
    • https://wixumiwob.weebly.com/uploads/1/3/0/7/130776296/31f00db7f1.pdfIn PDF document text
    • http://dehydratedoriginalgoodness.com/jorge_luis_borges_y_sus_principales_obrasgglas.pdfIn PDF document text
    • https://vezijukifi.weebly.com/uploads/1/3/3/9/133997169/c907965061df8.pdfIn PDF document text
    • http://intereriia.com/90292166659erwwn.pdfIn PDF document text
    • http://spainsale.pro/809617978028uez1.pdfIn PDF document text
    • http://setofexperience.site/pawaxikavifuxodigop7p.pdfIn PDF document text
    • https://genunilime.weebly.com/uploads/1/3/4/3/134344847/nunuxitini.pdfIn PDF document text
    • http://7lessons.site/79557750698p9shz.pdfIn PDF document text
    • https://paboludozov.weebly.com/uploads/1/3/4/3/134333588/361371.pdfIn PDF document text
    • https://jovanifapekiba.weebly.com/uploads/1/3/0/7/130739678/mugavag.pdfIn PDF document text
    • https://zaxavafu.weebly.com/uploads/1/3/4/3/134323176/zikusureniz.pdfIn PDF document text
    • http://tranquils.space/vogaletifirodaruf8lewi.pdfIn PDF document text
    • https://dozevexenunapaf.weebly.com/uploads/1/3/4/0/134017655/guxaforolopedum-rebujurevuze-jowalavofawa-xelemu.pdfIn PDF document text
    • http://inertbhjbj.ru/moultrie_m80_hard_reset9s4l7.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/sepovutapakogaf/sig_p229_duty_holster_with_light.pdfIn PDF document text
    • https://s3.amazonaws.com/sudevejerifu/casa_di_carta_stagione_3.pdfIn PDF document text
    • https://s3.amazonaws.com/tumuzu/que_es_un_liderazgo_paternalista.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/nirusovebijotifenerujidu.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/endgame_beckett_quotes.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/vepavokamugerosazenuwobi.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_off0000f0ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0CE 5568 bytes
SHA-256: fd0435a75092de88741633ab1850667e076f02a7a521f11afcd3d1681331469d
font_01_sfnt_off000103cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103CC 10696 bytes
SHA-256: 2b96e0ebb5c5bd8ce2bb55d851bbc6e55acded8087d417c5c0e62e3a06a7a001

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