Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa8c5b4ad8b2086c…

MALICIOUS

PDF

70.4 KB Created: 2021-01-23 11:10:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 595e49b1c849c51612d9b53efcdaceba SHA-1: 7c67d4bf534f03c4b7cf8220c10559feffd935d0 SHA-256: fa8c5b4ad8b2086cfb64669a33d05d562c5e55c76086f159382ce48cbf8cdbfe
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a site offering a Minecraft APK download, which is a common lure for malicious software. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of an external URI and embedded URL points to a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/aws?utm_term=minecraft++apk+version+0.+16.+0 PDF link annotation
    • https://site-1168207.mozfiles.com/files/1168207/6447827247.pdfIn PDF document text
    • https://site-1083679.mozfiles.com/files/1083679/neo_feudalism_examples.pdfIn PDF document text
    • https://site-1257147.mozfiles.com/files/1257147/wigezexadasutobusadu.pdfIn PDF document text
    • https://site-1236948.mozfiles.com/files/1236948/ligand_complex_ion_chemguide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388818/normal_5fe5e2873c897.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367271/normal_5fda61913ccaa.pdfIn PDF document text
    • https://site-1175676.mozfiles.com/files/1175676/7730500545.pdfIn PDF document text
    • https://site-1177810.mozfiles.com/files/1177810/visual_pinball_medieval_madness.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420776/normal_5fe8dfa27709b.pdfIn PDF document text
    • https://site-1188771.mozfiles.com/files/1188771/contact_us_page_email_template.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sasufufa/62193340697.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/vunitukiziwimiwul.pdfIn PDF document text
    • http://mibofive.epizy.com/gi_corrugated_sheet_weight.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/baremarumumosepeniwego.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/jumisolesiroxenokeziselox.pdfIn PDF document text
    • http://pejefovad.epizy.com/tabof.pdfIn PDF document text
    • http://daboloxasorun.rf.gd/autosuggest_react_form.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/responsive_email_newsletter_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/whatsapp_2018_free_video.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b35f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB35F 5276 bytes
SHA-256: c4784eeb8f554b21c1627f3b6eff98972a3ab4c10ae33cb5d995c8da758034c5
font_01_sfnt_off0000c552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC552 8972 bytes
SHA-256: 6aa8e80f9c20e136e1498268d2a90d534d45f48409960c13ea32a71c0decd044
font_02_sfnt_off0000de41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE41 8760 bytes
SHA-256: 05df8a281148a37cf566ad0191d9d5ca24870fbf8346b2e3499b26825eab12d1
font_03_sfnt_off0000fc2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC2E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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