Malicious PDF — malware analysis report

Static analysis result for SHA-256 30b761db079b2c63…

MALICIOUS

PDF

84.1 KB Created: 2021-01-25 03:51:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 79f78558638b1b663dfea10dc9637276 SHA-1: c7899cd5f27fb38bd6d6908aeca1f5af6d6ae099 SHA-256: 30b761db079b2c635aab88064f4b91eea377c6ecec8e5562f42d9de9e1bd6aa6
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that points to a suspicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to redirect the user to a malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://trafficel.ru/123?utm_term=the+comparison+of+a+company%2527s+financial+condition+and+performance+across+time+is+known+as%253A PDF link annotation
    • http://nuvuzujujafusu.22web.org/28396435715.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501810/normal_5fdacfa02dca3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383308/normal_5fdf3d4119579.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496582/normal_6000f60698e52.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495269/normal_5ff4f91eb9a49.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380214/normal_5fee84bf1b59b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385636/normal_5fcaca39b876a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365627/normal_5ff37ec4674ae.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/zonebon/vopilawajexevubegozemo.pdfIn PDF document text
    • http://kaseborodemo.rf.gd/joe_dolan_singing_the_answer_to_everything.pdfIn PDF document text
    • http://dexixikix.epizy.com/50167328315.pdfIn PDF document text
    • http://zuvemodu.rf.gd/sapivifidaverikiji.pdfIn PDF document text
    • http://jovurafop.epizy.com/lowuwatunu.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/identifying_integers_on_a_number_line_worksheet.pdfIn PDF document text
    • http://peworesafasar.epizy.com/red_and_orange_background_free.pdfIn PDF document text
    • http://samanoniminowut.epizy.com/lanebegesuk.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/wupozixi.pdfIn PDF document text
    • http://kizuwopo.epizy.com/57835347572.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_off00010888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10888 5684 bytes
SHA-256: 4c1810df71a804e2bb5426a6c1a12efde58993986d408ebe5390458e77d94d50
font_01_sfnt_off00011bd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BD0 11240 bytes
SHA-256: 36a584eae55f3f647d7becac2e7b08f2f217f368523ea89afd3c1b259569cc4b

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