Malicious PDF — malware analysis report

Static analysis result for SHA-256 b63d4135560f7fde…

MALICIOUS

PDF

97.4 KB Created: 2021-01-14 14:50:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 696f5abcf974118abcac1d7c395eefe6 SHA-1: 94d54942519852eb4b101cc24b5db41d99e6842e SHA-256: b63d4135560f7fde4a1dda53dd1bf1ea4fcb46d8c13b656c26df657210bf2ca5
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=manual+para+el+conductor+de+nueva+jersey PDF link annotation
    • https://site-1178066.mozfiles.com/files/1178066/grand_furniture_corporate_phone_number.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421934/normal_5fc4ee1d92e36.pdfIn PDF document text
    • https://site-1179441.mozfiles.com/files/1179441/zombie_age_3_gameplay.pdfIn PDF document text
    • https://site-1174638.mozfiles.com/files/1174638/nepikezozuwamimudal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425933/normal_5fb8e2f8966e7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445115/normal_5fffca2922b26.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365639/normal_5fc44960cf151.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477620/normal_5fc19c50bd9cd.pdfIn PDF document text
    • https://site-1234129.mozfiles.com/files/1234129/lab_chaos_action_packed_platforming_speedruns.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367294/normal_5f8c439ad3201.pdfIn PDF document text
    • https://site-1177911.mozfiles.com/files/1177911/twisted_sister_group_members.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387232/normal_5fb9cdb916069.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464871/normal_5fca8f945ba5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378157/normal_5f8d56244c9e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476273/normal_5fb039295e1ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499300/normal_5fb455cfc6b59.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00014089.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14089 5312 bytes
SHA-256: 271fe20318abdd6516b70fb5a3e2ba78e74d40e77c78fd98c610713290983c77
font_01_sfnt_off000152c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152C7 11664 bytes
SHA-256: 9e59a27803368cbcdeb15340b8d446eacc1a73f1505221d1317b3463a4c02f5b

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