Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1ad41e41a9f530a…

MALICIOUS

PDF

78.6 KB Created: 2021-03-27 11:23:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52287db0b1b864af7ea30ccaca0a1c41 SHA-1: d167d371809b84512c5928b1f0e90b6069349ea6 SHA-256: d1ad41e41a9f530a754e896eb21b9c7a4d8fe2e068332bb9572cd39ecaa8e519
164 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical detection for a link farm and ML classification. The presence of a 'download button' lure suggests a phishing or social engineering attempt. The document likely aims to trick users into downloading further malicious content via the numerous external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/123?utm_term=admit+card+icai+may+2019
    • https://baginemesurewis.weebly.com/uploads/1/3/1/3/131380932/gapiripoj.pdf
    • https://cdn.sqhk.co/divoxisig/igngigf/juzofuv.pdf
    • https://bolefusugo.weebly.com/uploads/1/3/4/8/134868203/6300580.pdf
    • http://smartroom.pro/62260245413ytgc3.pdf
    • https://nupuwumot.weebly.com/uploads/1/3/5/3/135305030/4cfb39ac46b7f.pdf
    • https://mepanomelisegil.weebly.com/uploads/1/3/4/8/134899905/weveza_sopilutezolas.pdf
    • http://getsalon.xyz/deletrear_en_espaol_worksheet_answerssg7pr.pdf
    • https://sovonasu.weebly.com/uploads/1/3/1/4/131407222/ee9f7822da01.pdf
    • http://c-advance.space/60804366289uh6qw.pdf
    • http://ses-paypal.com/90464409460o57w3.pdf
    • https://cdn.sqhk.co/motanunika/fP1bMhB/45681741707.pdf
    • https://cdn.sqhk.co/wofunukasu/uedx9ii/apa_table_of_contents_template_owl.pdf
    • https://cdn.sqhk.co/zubavagi/51uBRXT/12054460520.pdf
    • https://xixilizuxuwogag.weebly.com/uploads/1/3/4/8/134879277/nebize.pdf
    • http://infonewsuk.site/digi_postpaid_payment_methodxk6ya.pdf
    • https://cdn.sqhk.co/zimopaji/h3Jjhj2/88973171618.pdf
    • https://xexiroxenokela.weebly.com/uploads/1/3/4/6/134613030/minarogen.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xeroguru/south_africa_visa_bi-_84_form.pdf
    • http://xodibux.rf.gd/behaviour_at_workplace.pdf
    • http://lojaxafolato.epizy.com/fobumanufo.pdf
    • https://s3.amazonaws.com/tarajix/jekezofu.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_off0000f37e.bin
6a4babdb9424f443a9acacd8fa9690add2e46e1c19447737ff15680e0f801158		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF37E 5448 bytes
font_01_sfnt_off000105fa.bin
a87947a8cf8a054f3b3abb0ae6ba4af8fda6903807ce2fe8bab54d5db979d014		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105FA 11140 bytes

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