Malicious PDF — malware analysis report

Static analysis result for SHA-256 89b615f97d3058a4…

MALICIOUS

PDF

62.5 KB Created: 2020-11-14 08:24:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b24a7a62cc1729cc3db8d3d0dc9d7a88 SHA-1: d8068429043b2094948b9cb1ba3e1292e98ce1ca SHA-256: 89b615f97d3058a4574ed481f4efae7f12980532e7bb9ebf7bbe2789f56d92ea
96 Risk Score

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 0.9998

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://trafffe.ru/123?utm_term=electrolytes+worksheet+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409425/normal_5faed95813741.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381082/normal_5faabb422a5bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5f87a5e47a2e5.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/fajixe/26621339515.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/beb9d749-d7e9-4c10-ba6f-fc142643e1eb/nodoferorilonobofufuwas.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/cuerpo_y_alma_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/2001_ford_ranger_owners_manual_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88050eb9-fda2-453d-ac85-a8d69768c7ab/15775312499.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70572b82-ec95-4e23-995e-a73fb81844de/push_and_pull_factors.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/jepalufunadikifilubumub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18206093-133a-4a36-b896-8b7143415ae3/the_great_gatsby_chapter_7_reading_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/apoptosis_physiology_and_pathology.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/addicting_games_crush_the_castle_2.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_off0000bba5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBA5 5100 bytes
SHA-256: 697740b39c3aa8066799042af1cf064d8831d600bbb017c71c72947031e3acf8
font_01_sfnt_off0000cd15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD15 9636 bytes
SHA-256: ed95727abe92f7cdf508da79dd6040292d0beff2b1741fe550381fe90dae2229