Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd8383de3336b8a3…

MALICIOUS

PDF

58.9 KB Created: 2020-12-24 08:57:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 886716ec696fc68618ee971c193e7c96 SHA-1: 8390431ccb1254bab678dc66efcb7fd468ddf443 SHA-256: bd8383de3336b8a3f21909e80182df0562437b9f100fa99912be86b5ed35ef71
154 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics, including a critical alert for a PDF redirector link pointing to 'traffking.ru'. The ML classifier also strongly flags the PDF. While no scripts were extracted, the presence of a malicious redirector URL indicates an attempt to lead the user to a harmful site, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffking.ru/strik?utm_term=neon+pink+jumper+dress In PDF document text
    • https://cdn-cms.f-static.net/uploads/4483870/normal_5fc2ac057c01a.pdfIn PDF document text
    • https://cdn.sqhk.co/wukibezoso/jahidFh/73381453031.pdfIn PDF document text
    • https://jutebipofan.weebly.com/uploads/1/3/4/3/134334370/risolivuzanowav-tovasi.pdfIn PDF document text
    • https://cdn.sqhk.co/jibetovo/Tlihcf1/lego_ninjago_sets_dragon_s_forge.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368496/normal_5f918f1795197.pdfIn PDF document text
    • https://jorojesa.weebly.com/uploads/1/3/4/8/134861508/9292225.pdfIn PDF document text
    • https://sepafolelobonel.weebly.com/uploads/1/3/4/6/134614676/2c62cda6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470220/normal_5fd68a6a7a87e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/70aefae5-ddbb-42a3-a2be-14bcae3294bb/15927818183.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cb6af90-b58a-4703-b165-1ef26da1405e/led_icicle_lights_multi_color.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fffa398-3487-4c8b-8701-c19fc8d2dc59/vewazanufebu.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/xidigevodisokeluxoso.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_off0000aa14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA14 4972 bytes
SHA-256: bb45c1d7bff574d5e9d38eb174d72902f88c09c14a49962b3e26612165ee5b2c
font_01_sfnt_off0000baf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAF3 10644 bytes
SHA-256: 914395a2a330e27e5a77e066f4be05c2b442afb88b7a428908689156cd3c1d70

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