Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed0b24ba3476e5f4…

MALICIOUS

PDF

82.5 KB Created: 2021-05-20 16:19:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 7567145ade0f1e4bd8ce1181cb40d2bb SHA-1: 0c6619d9fd0dfe728950aaaf4a7d076e645293b7 SHA-256: ed0b24ba3476e5f46bc826ea93b9db639641c11a37295fc3161ad04c1909509f
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support this assessment. Although no scripts were extracted, the presence of a malicious URL and the overall detection profile suggest the document is designed to redirect users to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • 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.
  • 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://yafferge.ru/strik?utm_term=como+tirar+ar+do+cano+de+%25C3%25A1gua In PDF document text
    • https://gikotaduxig.weebly.com/uploads/1/3/1/4/131454052/3544811.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476420/normal_603689c28d928.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388617/normal_604ce6df1e714.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413587/normal_604e0436b544b.pdfIn PDF document text
    • https://kijiwutexaji.weebly.com/uploads/1/3/4/6/134698992/sewabaki-jewefuf.pdfIn PDF document text
    • https://mezovojexojija.weebly.com/uploads/1/3/0/8/130874002/48967ebd45.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393180/normal_5fd08e30f01fd.pdfIn PDF document text
    • https://jovapotokuxeb.weebly.com/uploads/1/3/4/8/134881142/2278129.pdfIn PDF document text
    • https://buzapakamewogu.weebly.com/uploads/1/3/4/3/134366326/memuvi_fatuxeba.pdfIn PDF document text
    • https://kenodijegubiv.weebly.com/uploads/1/3/4/5/134501598/312850.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501645/normal_6044fb36ed5ee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417408/normal_5ff67a923a99d.pdfIn PDF document text
    • https://dolopexoje.weebly.com/uploads/1/3/1/8/131872138/dujubi-rodepegup-kaxepezabelivu-jurur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374521/normal_60479cd562247.pdfIn PDF document text
    • https://tazumeter.weebly.com/uploads/1/3/1/4/131438167/pikowud.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/welanisowari/xaxidavetowuvomo.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/fundamental_theorem_of_calculus_part_2_khan_academy.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/speed_test._net_apk_pure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f88bc8e0-89dd-4d35-845d-e6028db58dc3/82749626477.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8189c0db-9189-4c79-98a6-02b094bb284a/92908650108.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/adp_workforce_now_time_and_attendance_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/946c10e3-6b59-468c-bdeb-08677f22770e/zipifunufikamojivitajivip.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_off0000f4d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D6 5188 bytes
SHA-256: b535c5c698895e78212da28c931a1fb597a3a1aae7e4e9346d2d88f5a5cf48a2
font_01_sfnt_off000105d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105D2 12584 bytes
SHA-256: 62ddf69b4b3b76fa1accff183ec10925f6425b1cda95e05662606d33b5befb98
font_02_sfnt_off00012c3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C3C 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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