Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb0eb30b9ca8d153…

MALICIOUS

PDF

163.2 KB Created: 2021-03-11 13:55:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 813b5ccc2d891d620be490f675b08ce1 SHA-1: e8239eb483d217326e7a8f9d0afbaa9f839d369d SHA-256: eb0eb30b9ca8d15385dd915ab74eb42d466525d9bb64c4785b5e8a0f72209a4a
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to a user manual, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://xajibur.ru/123?utm_term=husqvarna+automower+430x+bedienungsanleitung+pdf PDF link annotation
    • http://dududuw.mypressonline.com/christian_childrens_stories_for_church.pdfIn PDF document text
    • http://dosijefa.mypressonline.com/how_much_did_indie_games_make.pdfIn PDF document text
    • http://tersq.space/26867791183kw5m8.pdfIn PDF document text
    • http://dutov.org/what_is_an_integrated_review_of_literaturearq73.pdfIn PDF document text
    • http://zipubezexupoka.mywebcommunity.org/how_to_pair_altec_lansing_jacket_h20.pdfIn PDF document text
    • http://cafe-cok.ru/33371526947e69wm.pdfIn PDF document text
    • http://xrootunited.com/959671588138iyfw.pdfIn PDF document text
    • http://microbestdigitalmeter.xyz/hydroxyzine_davis_drug_guideprqgd.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/pidufozu/mawabedomezu.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/26535631519.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/56256860342.pdfIn PDF document text
    • https://c8a164a7-2549-4056-b209-d27d417f800b.filesusr.com/ugd/136d3d_b7691beb81b3444caf4ea1984d97556b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lunojol/23975882449.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/wusibiwesizemozozulidi.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/19635906164.pdfIn PDF document text
    • https://cf336f9a-6a79-4542-9269-5b62d6eb69dd.filesusr.com/ugd/1daf83_dfc608b89a47440ebaceaf6b82df1b7e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/fituri.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/34663597752.pdfIn PDF document text
    • https://0fe83ef2-ed6b-4f04-a52d-31fe3c58d8d1.filesusr.com/ugd/ade4e6_131fab66a78a4d55a6e0495007ae0998.pdf?index=trueIn PDF document text
    • https://3b87a2b8-2d13-4e6d-acc4-cbba57692a59.filesusr.com/ugd/50988c_5ae2951a7ead40f191d82737b76ee034.pdf?index=trueIn PDF document text
    • http://visugog.myartsonline.com/ketapulavinumupugoxeruzu.pdfIn PDF document text
    • https://cb6d8354-940b-4e05-9f1d-0150973ab277.filesusr.com/ugd/882da0_c2bd3f3b49ed43faa1fafb4d4c541c88.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/likerajatob/kakadunerukoxaxe.pdfIn PDF document text
    • http://titugol.atwebpages.com/87107260050.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_off0002427f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2427F 6200 bytes
SHA-256: df849020286f51cebbe422ab734505a50a65e0b1bbe35669dbc01176bb19b471
font_01_sfnt_off00025797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25797 12128 bytes
SHA-256: 2056da93665fc03bcb87598fbf20030b576160993d680dfdde637848196c43f8

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