Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2f05e240f70f930…

MALICIOUS

PDF

64.6 KB Created: 2021-02-25 08:52:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8b10e7c6cb3a939ac4fe1f05bc31549b SHA-1: 669b66e82e8334f08528fafac9fddf9dc5aa06dd SHA-256: f2f05e240f70f930334569bd123576579dd738d7ce77b6a7440cbac5fd71482d
156 Risk Score

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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://druttle.ru/123?utm_term=where+to+buy+the+greek+gods+yogurt PDF link annotation
    • https://komutezux.weebly.com/uploads/1/3/1/3/131398036/7005654.pdfIn PDF document text
    • https://femomupine.weebly.com/uploads/1/3/4/4/134458898/vizimigu_nasezejenasavux_zavosadepotap_tuviramevimiw.pdfIn PDF document text
    • https://cdn.sqhk.co/malevevipali/g1p0KGx/movie_maker_windows_free_download_full_version.pdfIn PDF document text
    • https://dozefiduvema.weebly.com/uploads/1/3/4/6/134617149/6635630.pdfIn PDF document text
    • https://tujuwofaxeg.weebly.com/uploads/1/3/2/8/132814826/narujamugasaxaz.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefimex/ggRoCjd/chicken_run_characters_ginger.pdfIn PDF document text
    • https://cdn.sqhk.co/xonudutixova/il5hjhb/gamer_chat_room.pdfIn PDF document text
    • https://pagejenaxupiwig.weebly.com/uploads/1/3/4/3/134383440/ritas.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/lokijuronig/tananamubemiwep.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/sunemajebokigef.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/52523279767.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/sasakevefuporebad.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/how_to_fix_badger_5_garbage_disposal.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/tujagotomasepuwo.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/30385987250.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/2003_yamaha_kodiak_400_valve_clearance.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/xitapi.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_off0000bf93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF93 5164 bytes
SHA-256: fb4c7283c8c285f5efa1a576c1258861ff264893ed0ba417cdb780ccd9c6164e
font_01_sfnt_off0000d136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD136 10728 bytes
SHA-256: ca795a76d29870d7d52067241ee22a6064230808406f34db93f41497339b17ef

Open this report in the interactive analyzer, or submit your own file for analysis.