Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8dc26a785b67185…

MALICIOUS

PDF

77.5 KB Created: 2021-02-19 13:19:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 44e78515b4f05bd34c3b2d3aa17b5ccf SHA-1: c3ebec3442345c6764f07369e5da3b1656616e54 SHA-256: e8dc26a785b671852a63f8c265593773b404c1b479a2298c0caa12da820795b9
156 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many of which point to PDF files hosted on Weebly and AWS. One prominent URL, 'https://maypoin.ru/aws?utm_term=comcast+remote+codes+for+lg+smart+tv', appears to be a lure, suggesting the document is designed to trick users into visiting a malicious site. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/aws?utm_term=comcast+remote+codes+for+lg+smart+tv PDF link annotation
    • https://pimazapodozem.weebly.com/uploads/1/3/2/8/132814260/e9ad81210bd.pdfIn PDF document text
    • https://fomoxizukewoviw.weebly.com/uploads/1/3/0/7/130739072/foxafupadiv.pdfIn PDF document text
    • http://vobonenagixavus.66ghz.com/gitawa.pdfIn PDF document text
    • https://cdn.sqhk.co/durotula/jdifVid/45049758467.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/mozirolinitaje/bezegaluvepusodipusejip.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/full_form_of_ssc_in_indian_navy.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/lubanuxup.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/lifetumuvo.pdfIn PDF document text
    • http://wojixefem.epizy.com/environmental_management_igcse_book_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/butekizupowizunegeb.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/18317813049.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/laboratory_attendant_hssc_answer_key_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/67661804497.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/classifying_animals_worksheet_grade_3.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/xoxupeduxodatapelusab.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/34275685721.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_off0000f3fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FA 5304 bytes
SHA-256: 93bb2ab973eaec9687ccbeb067e48f18353f3dda980ab2f5075a76231bb7a824
font_01_sfnt_off000105f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F4 10308 bytes
SHA-256: 1df4ee1b027565bd89169b6a0f7563d10a0521ca30b3e5abb4a6b2f27f28b9eb

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