Malicious PDF — malware analysis report

Static analysis result for SHA-256 c417e7eec99e9b8f…

MALICIOUS

PDF

81.3 KB Created: 2021-03-04 11:55:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e9fdee51d4f21f566d03683045ec9b37 SHA-1: 6a87c8df944fe02e75bb099e5391b9fab3bd7401 SHA-256: c417e7eec99e9b8f2de3291098a62100f4291bf799c19c360069e422d92fa1d8
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified as a link farm, and is flagged by ClamAV as Pdf.Phishing.Trojan. The embedded content, though heavily obfuscated, suggests a lure related to 'Ipad mini 2019 model specs' to drive traffic to malicious URLs. The presence of external links and the phishing detection strongly indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://lozipotod.ru/123?utm_term=ipad+mini+2019+model+specs
    • https://cdn-cms.f-static.net/uploads/4366033/normal_601480a2e7acc.pdf
    • https://cdn-cms.f-static.net/uploads/4487194/normal_6037222974f9e.pdf
    • https://cdn-cms.f-static.net/uploads/4446642/normal_5fe72c2c2f2c0.pdf
    • https://static.s123-cdn-static.com/uploads/4447631/normal_5fe2db0e8c671.pdf
    • https://nubeboganiroj.weebly.com/uploads/1/3/1/3/131384383/04764c.pdf
    • https://jipunusib.weebly.com/uploads/1/3/0/8/130813609/7260078.pdf
    • https://tiramanab.weebly.com/uploads/1/3/1/8/131856622/7576043.pdf
    • https://cdn-cms.f-static.net/uploads/4375908/normal_600a0663736c8.pdf
    • https://ximinelinax.weebly.com/uploads/1/3/4/3/134313791/vomubo_fuxamoze_buxilaxinuka.pdf
    • https://static.s123-cdn-static.com/uploads/4454550/normal_5fe3872e360a1.pdf
    • https://cdn-cms.f-static.net/uploads/4422373/normal_603e839dd67e2.pdf
    • https://vakogupomuniv.weebly.com/uploads/1/3/4/6/134610568/5f134468ba60.pdf
    • https://static.s123-cdn-static.com/uploads/4500674/normal_5fedc7a8e7764.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/waxapoz/67705517566.pdf
    • https://s3.amazonaws.com/wisuw/baul_song_2018_video.pdf
    • https://s3.amazonaws.com/saziwijaxodav/yearly_sales_business_plan_template.pdf
    • https://s3.amazonaws.com/zikeko/92874168326.pdf
    • https://s3.amazonaws.com/guwutivupudutu/1568573709.pdf
    • https://s3.amazonaws.com/rorives/drug_adverse_event_reporting_regulations.pdf
    • https://s3.amazonaws.com/dobesogum/family_tree_template_for_excel.pdf
    • https://s3.amazonaws.com/vonuxagupeduze/lasur.pdf
    • https://s3.amazonaws.com/vavejijitatofu/the_lover_marguerite_duras_summary.pdf
    • https://s3.amazonaws.com/davolazupivowi/bixixifuposomivorute.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_off0000fcd1.bin
9d6bc6ed9d3f51000b03a9b8814c6353f55763c92b1bf5f0b313f9b9cc69f559		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD1 5540 bytes
font_01_sfnt_off00010f9d.bin
6990aee9dd1b27d8d66c4138107d23d7eafc57b5fe7e3a73aaa704a9749aff11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F9D 12220 bytes

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