Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87cc4c18e9acba3…

MALICIOUS

PDF

64.1 KB Created: 2020-12-06 14:43:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: e8f455c8d6ffe69235a268f2ca9f1b99 SHA-1: deb5f96ac82cd7fba3c8a3419c1cbe33e371c6f9 SHA-256: f87cc4c18e9acba3f34e92b90cd841cc01ad3d42de0aef76056178b5701a84bb
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 0.9998

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://traffnew.ru/strik?utm_term=east+clinton+middle+school+ohio PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4466675/normal_5fc3c7d6d51c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413000/normal_5f9de13f6c314.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/ratixifo/19840980255.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc35f47ec917750a3e7896c/t/5fc4b463fa04221c71b45b12/1606726755562/61642700615.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10304b8467722f1d4df02/t/5fc164d29ee0f32b8787517a/1606509779865/cylinder_and_cone_volume_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae3ab497-a9af-4c4d-bef0-54ff2227192e/earthship_designs_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58a2fec6-99ae-4c37-9042-c3ea1a7d97e1/words_that_start_with_anu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc558902cf09257bd892bb7/t/5fcc26c15177ea328cb29cbe/1607214786458/car_driving_simulator_drift_games_apps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa371dd9-e3f9-4af9-883c-331e10287146/jiretojozi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7240b187-19e1-491f-a3d3-2e7b3d0ad290/91062753373.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27d7511f6a419848fbf13/t/5fc91a22a49e01393cec57e4/1607014947345/tomagumofa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dde4403f5353fd9590af/t/5fc18d93cb3e0f57718acf68/1606520212784/chicken_soup_for_the_soul_dog_food_puppy.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1559bc6d9645836252c59/t/5fc3f3307acac6192a3aa5f9/1606677296465/45506527379.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_off0000bc6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC6B 5040 bytes
SHA-256: 51f3c4aba176515ed325f3daeb4b409dabae368b5ee118575d716f158870a074
font_01_sfnt_off0000cd67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD67 11460 bytes
SHA-256: 6e2ba1782582cbef8c96f576afef143da18ecddb30662498f72ef2d19f4b55a9

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