Malicious PDF — malware analysis report

Static analysis result for SHA-256 f734490702ac6b30…

MALICIOUS

PDF

80.9 KB Created: 2021-03-21 09:13:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 36c7d716a68c3dcef30dec5e158822af SHA-1: 5d0f6352cd090c8d4dee98be9fd17b2ab7fc3a7c SHA-256: f734490702ac6b30b7ea66cd8e210e3f852b627e4e5eba832eaf710875c26faf
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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
  • 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://jacksth.ru/strik?utm_term=how+to+count+essay+words PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4428069/normal_601869202f766.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451353/normal_602273afe4559.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477386/normal_6054e2f4061c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415309/normal_60109429e86e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424009/normal_6006a9e4db703.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388835/normal_603fb2750534d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416305/normal_5ffc80e5b74a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366961/normal_603416df266d4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469128/normal_5fe15e0eba1fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426816/normal_6003024e279e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372354/normal_5ff64a25bf1e4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406456/normal_5ffd730eef1a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497071/normal_5ffc6c8142841.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424007/normal_5ff34d2da9103.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464996/normal_5fe633f9014a8.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/juzowilipi/lexasafijudepuji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f69f43c-4e08-417a-882c-508641cab659/79996229783.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/92687225781.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e9df97c-096b-4809-9c22-25bf57118c24/que_es_el_contexto_de_un_pasaje_biblico.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/how_to_reset_centurylink_voicemail_pin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/833edaa3-d968-4d8d-81a8-942c772182aa/is_it_correct_to_say_the_reason_why.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad5e3db9-5491-4fa1-b3e7-98d23ffe69eb/why_is_my_macbook_speaker_buzzing.pdfIn PDF document text
    • https://s3.amazonaws.com/jaloto/zazisajefixozinodozul.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/flowers_name_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/laxmi_pooja_aarti_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3ad517b-b6a0-492c-9452-2157b9a2bde5/sapiens_yuval_noah_harari_quotes.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/ravubugotezik.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_off0000fe2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE2E 5056 bytes
SHA-256: 6b6f560e6f5c70981e12698897ab320298d6845eda856f22740bd84246491e3c
font_01_sfnt_off00010f82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F82 11236 bytes
SHA-256: 8ba32dc372556b122506fb8fdff4208b6023c41516a659f7e4c3195eafba89da

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