Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3d7b551bbb6f11d…

MALICIOUS

PDF

78.0 KB Created: 2021-01-11 22:51:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 56ec5a8c86e286ba05d6e1f516aa5cec SHA-1: fe2c2646112c9363edcf4daa58953f1d4b95f146 SHA-256: e3d7b551bbb6f11d22d76cb23f44ca54576ebd8471a6ee7f23d966b44c9cbeb5
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The PDF contains a large number of external links, suggesting it functions as a link farm, likely to redirect users to malicious websites or to manipulate search engine results. While no scripts were explicitly extracted, the PDF structure and numerous external URIs point towards a malicious intent to lead users to potentially harmful content.

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://trafftec.ru/aws?utm_term=aptoide+tv+on+android+box PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485310/normal_5fd799815b1d0.pdfIn PDF document text
    • https://vaxajiwozoli.weebly.com/uploads/1/3/1/6/131637631/kegule.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387420/normal_5f948ba0ea21b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386076/normal_5fbd09e41b9b4.pdfIn PDF document text
    • https://site-1168306.mozfiles.com/files/1168306/felefexunepive.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375357/normal_5fe84e3241233.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370054/normal_5f8907d13deef.pdfIn PDF document text
    • https://site-1172655.mozfiles.com/files/1172655/terro_ant_killer_outdoor_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424981/normal_5faa66d28e538.pdfIn PDF document text
    • https://site-1173352.mozfiles.com/files/1173352/novavesigujilovemak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473632/normal_5fec05360fc18.pdfIn PDF document text
    • https://deriwofapavuz.weebly.com/uploads/1/3/4/3/134311795/4186514.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384647/normal_5fa730e18bbf6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f673.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF673 5000 bytes
SHA-256: 8aa99decaa55f573893b3ae11ebc1127c485c52e70102972f5d057a1f041d590
font_01_sfnt_off00010786.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10786 10444 bytes
SHA-256: ca2bd7c2f7ad46cfe28408813b0202cd72b3b019f72584bfab818b9bab47b824

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