Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6f5aeb4a7ca48f5…

MALICIOUS

PDF

77.4 KB Created: 2021-03-09 10:51:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 199854e484dc98ea6851304704593a74 SHA-1: 9469127d5cb4c3175741f56f924687eb7b39d018 SHA-256: c6f5aeb4a7ca48f5155d9e2b750619a3a36738c4b190869b34ba3a5521fa49fb
96 Risk Score

Malware Insights

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

The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to a suspicious domain, likely intended to lure the user into downloading further malicious content or visiting a phishing page. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://druttle.ru/wix?keyword=lost+colony+of+roanoke+worksheet+5th+grade
    • http://classicalnaturally.com/65026135975tutnv.pdf
    • http://bloomwithdeanna.com/kabowixovn0icb.pdf
    • http://fosireditoj.mygamesonline.org/que_se_puede_comer_cuando_se_sufre_de_reflujo.pdf
    • https://static.s123-cdn-static.com/uploads/4380379/normal_5fdf319b859b0.pdf
    • http://flebolog24.com/31394360601hgg70.pdf
    • http://formverifiedbadge.com/30952776547bom3a.pdf
    • http://vonexalux.sportsontheweb.net/ct_teaching_manual_a_systematic_approach_to_ct_reading.pdf
    • https://cdn-cms.f-static.net/uploads/4405945/normal_6009cef102301.pdf
    • http://prizinsta365.website/mojalzgcul.pdf
    • http://com-copyrighit.com/ryobi_18v_pole_saw_stopped_workinga9st5.pdf
    • http://lozipazom.sportsontheweb.net/what_does_lucky_charm_mean.pdf
    • http://sufawevugut.mywebcommunity.org/golds_gym_430i_treadmill_will_not_start.pdf
    • http://atomyimperial.ru/5055007821dzg2f.pdf
    • http://vwwv-avito.online/how_to_pair_motorola_bluetooth_h700afriz.pdf
    • http://copalofa.site/94621916861dp0jo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://3745348a-78a0-42d7-8ff4-af2b45bf5faf.filesusr.com/ugd/02631b_1015eca34ab64e7e86f1b28eaddbf1a1.pdf?index=true
    • https://0ea28b16-58c2-472d-b6be-3e97fe9b7bb6.filesusr.com/ugd/696b8a_c2e92cbf016347d29349856bf7abe0e7.pdf?index=true
    • https://s3.amazonaws.com/vekodupiwarobi/aitsl_standards_for_principals.pdf
    • https://s3.amazonaws.com/mozedijiz/97660043192.pdf
    • https://c6de0af5-2a4c-46da-924c-839bccb102c6.filesusr.com/ugd/5f1f0f_6a457372c711483392531b5e4193044d.pdf?index=true
    • https://d12e84a0-9808-45da-82c6-613dfe540d1b.filesusr.com/ugd/dc8a8e_c4716208cf7c4f518e0abac31273433c.pdf?index=true
    • https://s3.amazonaws.com/gumegulaxi/7_chakra_healing_guided_meditation.pdf
    • http://zevusup.atwebpages.com/how_to_apa_cite_davis_drug_guide.pdf
    • https://3a00e800-a8eb-44ae-aafc-ae9aecab8e06.filesusr.com/ugd/1715bf_a402d132a9a84b9ea1007277d669e07d.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f072.bin
34f5d2d11ed956362466b0c3347702d3c6fad0a218c5c0f55b8c967959650e25		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF072 5604 bytes
font_01_sfnt_off000103a2.bin
d2becaff67484e704b960eaddc1555d76f051f06985068b06ef5105fbaa6feb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103A2 10624 bytes

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