Malicious PDF — malware analysis report

Static analysis result for SHA-256 86b2974a398c37e0…

MALICIOUS

PDF

70.3 KB Created: 2021-03-08 21:55:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 55ae79270b01e449d0a6e4aa618be957 SHA-1: a4731520260ea5a4b5dbe856fa8d8b04fdd63f72 SHA-256: 86b2974a398c37e05e8d9c5f0312abffa4720460e46fd5ad8b1f2e796d042454
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, which is likely used to host malicious content or redirect the user to a phishing site. The document body, though heavily obfuscated, contains keywords related to Craigslist, suggesting a phishing lure.

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://dugedepap.ru/wix?keyword=craigslist+mpls+mn+free PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jimavuzeladones.epizy.com/the_monk_who_sold_his_ferrari_amazon.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/fidoru.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/kitchenaid_refrigerator_water_filter_replacement.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/properties_of_nanomaterials.pdfIn PDF document text
    • http://jisizulo.rf.gd/69271601121.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54b92658-6f46-4a70-8581-7bf13bec32df/yamaha_rx_v671_decoder_off.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2613e8ba-bbf7-4c50-b4f2-f30a61094e35/the_worlds_greatest_blackjack_book_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/bangladesh_is_polio_free_country.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/13037011786.pdfIn PDF document text
    • http://laxuwesesanaw.rf.gd/12204914476.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/79029849000.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/oci_application_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89e647c7-9301-41ab-a572-73fd8591a70e/ruludunexavoxikuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/badf999a-d40c-4848-9f5f-4998b5a1f64d/46658550183.pdfIn PDF document text
    • https://s3.amazonaws.com/tumuzu/29954905233.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/what_type_of_fish_does_long_john_silvers_use.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/32022022180.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/queensland_antenatal_screening_guidelines.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_off0000da38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA38 5124 bytes
SHA-256: 9d09d8f9c625db669132d289447851f5b1c394c60e5bdb17fea914f611040eed
font_01_sfnt_off0000eb8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB8D 9656 bytes
SHA-256: 33de3ef0abb61a4a4f02073acf2d824dfe0ecd43d345886d504a101a99483846

Open this report in the interactive analyzer, or submit your own file for analysis.