Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea8586d510d7b328…

MALICIOUS

PDF

79.3 KB Created: 2021-03-15 18:21:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: ce78334e5d0ba8a8449acf68a7cc4944 SHA-1: 00b192536f4bd5494d1c0f6cfa6e542f4788e0de SHA-256: ea8586d510d7b328c75b66b0a4f0f7d53eb377e5746154f649f424f852a0f4c1
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://zajinet.ru/strik?utm_term=how+to+manifest+using+candles PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4416661/normal_5ff293dd73813.pdfIn PDF document text
    • https://safibumiwi.weebly.com/uploads/1/3/4/3/134320627/fiworuguj.pdfIn PDF document text
    • https://kuwumezebuxe.weebly.com/uploads/1/3/4/1/134131528/kezasum-noval-jilati.pdfIn PDF document text
    • http://riniwodifole.medianewsonline.com/maxi_cosi_pria_70_front_facing_installation.pdfIn PDF document text
    • http://waxedeb.getenjoyment.net/zmodo_nvr_wireless.pdfIn PDF document text
    • http://birapemotafew.mygamesonline.org/98139189219.pdfIn PDF document text
    • http://liko-sneakers.com/aelita_queen_of_marsg3zrt.pdfIn PDF document text
    • http://tofotibuwul.sportsontheweb.net/xesiderebapavavimufifox.pdfIn PDF document text
    • http://poopo.ru/86195478967z1yz2.pdfIn PDF document text
    • http://rubeatyshop.xyz/zofegagebifodfn3l.pdfIn PDF document text
    • http://cparta.moscow/android_9_htc_u11_lifeqk1tw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426955/normal_5fed1527f3d6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387701/normal_6014e6d19eb8d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450632/normal_5ff815ad45c47.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/pululusodogi/vapabajefi.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/fajomaxelawir.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/bootstrap_vue_form_wizard.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/97912357458.pdfIn PDF document text
    • https://s3.amazonaws.com/zulezov/fazufijovamizubarur.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/how_to_describe_sunlight.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/tanzania_movies_kanumba.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/les_cercles_de_la_forme_diderot_avis.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromisixinolib/veryfit_2._0.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB78 5180 bytes
SHA-256: 481eef49798e074b0b007cb6c1bbf6c9db415b96bf84acc912fd15d9ecf21f22
font_01_sfnt_off0000fd0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD0E 10876 bytes
SHA-256: f516d4985b6669522b89cb8b27d70f8648f679a9d2c91b89e9485007050e0dd7
font_02_sfnt_off000121ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121CE 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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