Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b8a9700bee5fb12…

MALICIOUS

PDF

76.7 KB Created: 2021-03-04 22:32:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: be1ae6e2a6d97e3ca05f3a329cfd6ce0 SHA-1: 60ecac00a768168b114c70e88810c8450cb45785 SHA-256: 9b8a9700bee5fb12abb8ce5fb2cc33853a2a4b8070afd6a0c7671636763a0b2d
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The PDF contains a large number of external links, indicating it functions as a link farm for SEO purposes. One of the primary external links points to a URL that is not yet classified, suggesting a potential distribution point for malicious content or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ponafet.ru/123?utm_term=astro+gaming+a20+wireless+headset+xbox+one PDF link annotation
    • https://koduxiwarutuj.weebly.com/uploads/1/3/2/7/132740502/2744056.pdfIn PDF document text
    • https://rizomoxus.weebly.com/uploads/1/3/4/5/134589692/b1581.pdfIn PDF document text
    • https://nekazexupogufeg.weebly.com/uploads/1/3/1/4/131454238/jivijulobivifobo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wujodibu/audience_and_purpose_in_writing_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/define_cloud_based_platform.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/breitling_aerospace_evo_night_mission_black_dial_titanium.pdfIn PDF document text
    • https://0ea1ff7f-05b3-43a2-9744-178351a05ed1.filesusr.com/ugd/01f9b9_35564bf140704d9ebdec69bfc99f18f8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wezukep/75346104914.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70cef3d4-c87d-43a3-ad3d-76f454303ffc/60203624332.pdfIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/css_left_align_form_elements.pdfIn PDF document text
    • https://4b0cdf75-2e42-4830-99f1-bbdbaec3f661.filesusr.com/ugd/891219_6e99a25a3bd7421382d91595dc9c8332.pdf?index=trueIn PDF document text
    • https://8767aa75-4bd5-48c0-94ca-24e983238001.filesusr.com/ugd/debdc1_14d40f24fde5443581486a4492cbc351.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/davog.pdfIn PDF document text
    • https://1a6defe7-92a0-4357-8a70-d3bce85d30c9.filesusr.com/ugd/385065_d8e35bc8ca54439ba85d7dda45039e27.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/luropiw/how_to_change_jump_force_language_to_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2993919f-a5b5-4391-9f01-9e45fe87ace7/five_tibetan_rites_benefits.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5216e03a-5942-460a-ab18-071968b57284/is_fast_cash_loans_legit.pdfIn PDF document text
    • https://e97408dc-4b05-4e3b-9f19-f4127feb49ef.filesusr.com/ugd/a42eed_aa963c52b89e4aef9d114ee8b2e5d52d.pdf?index=trueIn PDF document text
    • https://ddb0fe67-a09a-413d-b59a-c21b1dde3186.filesusr.com/ugd/3f0e57_e8ce76b176554d3fb26b1d6ed94c011a.pdf?index=trueIn PDF document text
    • https://98be45bc-63b9-4117-aff7-84a3d4f2c4a0.filesusr.com/ugd/90c678_788cbbf513594fe282b1ff5131dc3989.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/552be395-629c-4350-8f68-fee2df7c886a/2007_honda_civic_hybrid_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/stream_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/fopuxuga.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF0 5588 bytes
SHA-256: e43ec52d0aba404c304ff42ea73464eb3cc61d88d879f6209e61347414977a3c
font_01_sfnt_off0000eec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC3 11608 bytes
SHA-256: 12f5af39bc5cdbf1e936472dc2765f1170fed6fa70b7fb9160bf3716b93349eb
font_02_sfnt_off00011672.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11672 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c