Malicious PDF — malware analysis report

Static analysis result for SHA-256 0960762b43b8b248…

MALICIOUS

PDF

73.8 KB Created: 2021-03-02 07:40:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 2d171deb22a28a6932d67120b6bcd6ab SHA-1: a1a29adb397080a95954f38e65cbad11f29776d9 SHA-256: 0960762b43b8b248d23de8b24ab90272c7e5b61152a346eb7f8db263318d7c31
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, many of which are SEO-optimized and point to other PDF files, suggesting a link farm designed to distribute malicious content or phish users. The presence of the URL 'https://maypoin.ru/strik?utm_term=hindi+bible+verses+app+download' further supports the phishing lure.

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://maypoin.ru/strik?utm_term=hindi+bible+verses+app+download PDF link annotation
    • http://manekobe.22web.org/bosch_washer_dryer_manual_exxcel.pdfIn PDF document text
    • http://kutakelipaxeb.22web.org/loladaluxelunenibiv.pdfIn PDF document text
    • https://lukogazusewof.weebly.com/uploads/1/3/4/6/134643336/73c4418abb.pdfIn PDF document text
    • http://givepamodugag.22web.org/momukijixogarifobabijalid.pdfIn PDF document text
    • http://nenegifivujaxu.mypressonline.com/62377785631.pdfIn PDF document text
    • http://dipunag.getenjoyment.net/how_to_use_control_solution_for_true_metrix.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/viregujipowuru/41818845286.pdfIn PDF document text
    • http://ditajizuru.rf.gd/nezufukibosikerujimoxorop.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/19887829159.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/bsc_nursing_syllabus_1st_year.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/i2_analyst_s_notebook_9_free.pdfIn PDF document text
    • http://muxawij.rf.gd/game_billiard_3d_pc_offline.pdfIn PDF document text
    • http://tunowik.epizy.com/dufisiri.pdfIn PDF document text
    • http://rilifufamorupud.epizy.com/37164591908.pdfIn PDF document text
    • http://bidusibebawuz.onlinewebshop.net/weluloledujujem.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e440.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE440 5204 bytes
SHA-256: c778a149e45ff46d132237e06357e6df53730156dcc5553ba236ecd278a37008
font_01_sfnt_off0000f609.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF609 10740 bytes
SHA-256: 51714a9ce194dfdb2bee61fe785dfee8c1a97241f1c771cf2df2feb943af1c8b

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