Malicious PDF — malware analysis report

Static analysis result for SHA-256 e07d48ad84212cc7…

MALICIOUS

PDF

65.9 KB Created: 2020-11-25 14:40:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 8d1526ac77ae9c2b28f3589a57826772 SHA-1: 183fdcf0953652eb1cbe1e51014ee7685dec7371 SHA-256: e07d48ad84212cc7eb2c93e1e96c79ef5e69161c2208e2785fba4ff8c8dbea64
222 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with at least one identified as a malicious redirector. Heuristics indicate a link farm and a potential download lure, suggesting the document's purpose is to drive traffic to malicious sites. The ML classifier strongly flags this PDF as malicious, and ClamAV confirms this with a 'Pdf.Phishing.Trojan' detection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffine.ru/123?utm_term=ttorrent+pro+apk In PDF document text
    • https://gewaxuselez.weebly.com/uploads/1/3/4/2/134265722/2562272.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422133/normal_5f9dccc9afef4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371808/normal_5f88d022cde32.pdfIn PDF document text
    • https://mujonutuxow.weebly.com/uploads/1/3/4/3/134336111/kilamelelezexelop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393362/normal_5f9e487111248.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/zerejibixupav/broken_angel_english_video.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/30664013486.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/stick_games_combat_tournament.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/employee_provident_fund_act_1952_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/43149325123.pdfIn PDF document text
    • https://s3.amazonaws.com/jujojomojemiz/15308765261.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/jajukivunilunelefuli.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_off0000c719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC719 4616 bytes
SHA-256: 8a773f90910373f863d8167c3346721aa74df2b3279f13a8bb85e88c2169f7f6
font_01_sfnt_off0000d6de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6DE 10652 bytes
SHA-256: ce5fe51b7a8fc227884c0c7f99d175bbe4583d376c3d7dc8d7a8122216f7b93f

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