Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c099a8a20799147…

MALICIOUS

PDF

65.5 KB Created: 2021-02-26 07:25:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: fdd7d0d6427600f1be914840ed68b9da SHA-1: 7f673718c6fe6ae9faac1ff54f2f6d29a4a87306 SHA-256: 7c099a8a20799147371955ba923416c8d9706a854ef51f8fe3b8d0caf9b13454
156 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 finding of a PDF link farm. The presence of numerous external URIs, including one pointing to 'baarspo.ru', suggests an attempt to redirect users to potentially harmful sites. The ClamAV detection further supports its malicious nature, identifying it as a phishing trojan.

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://baarspo.ru/123?utm_term=black+and+decker+trimmer+edger+parts PDF link annotation
    • http://pitetivedu.iblogger.org/donald_mclean_automatic_flight_control_systems.pdfIn PDF document text
    • https://xaxafojub.weebly.com/uploads/1/3/0/7/130738676/sipuzege.pdfIn PDF document text
    • https://zeberafuduzugag.weebly.com/uploads/1/3/2/6/132682167/kalevenipijir_mafapulopan_vadumafej.pdfIn PDF document text
    • https://wigewowatabosaz.weebly.com/uploads/1/3/4/3/134352056/27f6c4b8913.pdfIn PDF document text
    • http://kerutugizuxig.mygamesonline.org/sewetipakadevosibumategi.pdfIn PDF document text
    • http://zikewexer.scienceontheweb.net/11856501038.pdfIn PDF document text
    • https://rogaturo.weebly.com/uploads/1/3/1/0/131069781/palok.pdfIn PDF document text
    • http://bobixuposu.22web.org/catholic_evening_prayers.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/xipavir/apple_airpods_android_google_assistant.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/27910639183.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/2887329863.pdfIn PDF document text
    • http://fipiwafupogo.epizy.com/tasobajejenajomapebesame.pdfIn PDF document text
    • http://setuvufijub.epizy.com/bhakti_songs_video.pdfIn PDF document text
    • http://zuniguvip.epizy.com/bancoposta_click_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/99419387290.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_off0000c739.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC739 5508 bytes
SHA-256: 89724bf2bfd5ba3e4985dd6eefd483ac664a82e369f1132b9ce56421af59413a
font_01_sfnt_off0000d9dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9DC 8952 bytes
SHA-256: 9bf8ebe974d2c602d8aad23afc286393f918a5b20d11ad5f426ec3e9334fa691

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