Malicious PDF — malware analysis report

Static analysis result for SHA-256 0686574ebd026e66…

MALICIOUS

PDF

76.2 KB Created: 2021-03-01 03:52:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d34e956c317834759c8dc4c458e0c12c SHA-1: 72b75bb93fd38a5bb678d887c10f93cdfb32da3a SHA-256: 0686574ebd026e667d76ed005f0c8f671a9533042572ec08e2b62420456c8769
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged it with high confidence. While no scripts were explicitly extracted, the presence of embedded URIs and the overall detection suggest a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://gimoguvi.ru/aws?utm_term=how+to+reference+personal+interview+apa+7th+edition PDF link annotation
    • https://zegirapenutiv.weebly.com/uploads/1/3/4/3/134393596/diwoxeritibukar.pdfIn PDF document text
    • http://mugedly.xyz/75065515105i3cn0.pdfIn PDF document text
    • https://josebugovoje.weebly.com/uploads/1/3/0/7/130738719/jobexubozidagog.pdfIn PDF document text
    • http://8bitbeardsco.com/my_hero_academia_season_2_episode_3_dubbedx3qx1.pdfIn PDF document text
    • https://gotenalonas.weebly.com/uploads/1/3/4/3/134372716/jukiwemeso-kokimepezofota-pinex-kofateme.pdfIn PDF document text
    • https://kigazodiraju.weebly.com/uploads/1/3/4/6/134678535/b0a99ac5.pdfIn PDF document text
    • http://nerroba.info/xefawuxuvixojl6vl.pdfIn PDF document text
    • http://makamar.xyz/java_jdk_for_macbook_airdr2d8.pdfIn PDF document text
    • http://gooddevice-online.com/taxejisabinuzizumix6b.pdfIn PDF document text
    • http://nakidki-alkantara.xyz/star_wars_movies_ranked_by_popularityh8i1c.pdfIn PDF document text
    • https://sopoxovolofu.weebly.com/uploads/1/3/4/5/134509961/3ba97e.pdfIn PDF document text
    • http://prequester.online/460964142703lsdg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pejabefi.rf.gd/26395079123.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/brother_online_user_s_guide_hl-_l2390dw.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/zubajewolilomusudosig.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/xemozepedoxikozumad.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/kozisedodiwobolas.pdfIn PDF document text
    • http://zinizebaki.epizy.com/3d_max_basic_tutorials.pdfIn PDF document text
    • http://mijunuwe.epizy.com/3110022885.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_off0000ebfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFC 5436 bytes
SHA-256: 07ca78f91925bb9750f60a9459492bad0783924e2d5f28a97c3a6caabd5ef4df
font_01_sfnt_off0000fe92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE92 10868 bytes
SHA-256: afaaef046c689dee41c4d704f39e0bf15e9d85fedf02bb1ec0fcb2ca534d38c0

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