Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bcf101b0fcb89c4…

MALICIOUS

PDF

77.9 KB Created: 2021-03-19 11:46:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 25062223f3e8af6d54e20855ed53e86b SHA-1: 2652dee810276833c7c6647fb83af2edbd6845c7 SHA-256: 2bcf101b0fcb89c464b57c8d79d289338543094045b0085c07dfcbbed5074e7e
164 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains a large number of external links, suggesting a link farm or phishing attempt, with one prominent URL pointing to a site offering movie downloads. The presence of embedded links and the overall structure strongly suggest a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jumiwimov.ru/wix?keyword=south+movie+hindi+dubbed+download+filmywap
    • https://sexozubo.weebly.com/uploads/1/3/0/7/130740033/xejogevewati-nimisametamadir-xegede.pdf
    • https://static.s123-cdn-static.com/uploads/4425921/normal_5fdde81dad30c.pdf
    • https://mizavujubamu.weebly.com/uploads/1/3/0/7/130775062/gevuromegigazopa.pdf
    • https://famosufed.weebly.com/uploads/1/3/4/9/134900490/9216317.pdf
    • http://vuvodagedene.scienceontheweb.net/35305410535.pdf
    • http://pitowiragomiwa.22web.org/sixth_grade_math_minutes_answer_key.pdf
    • https://cdn-cms.f-static.net/uploads/4453741/normal_6044fafeae54d.pdf
    • https://ruzuwigowan.weebly.com/uploads/1/3/1/4/131453288/najizur.pdf
    • https://wejumarokurefa.weebly.com/uploads/1/3/0/7/130776247/vagotoduja.pdf
    • https://zigudawaza.weebly.com/uploads/1/3/6/0/136035030/tovozosej-dipisofoju-sigedon-jivapukefil.pdf
    • http://zolijava.iblogger.org/87847595337.pdf
    • https://jonenatone.weebly.com/uploads/1/3/1/8/131872225/tisobanuxaba.pdf
    • https://static.s123-cdn-static.com/uploads/4369763/normal_6008c1a259e85.pdf
    • https://cdn-cms.f-static.net/uploads/4380226/normal_6039dce147857.pdf
    • http://lunatan.medianewsonline.com/outdoor_furniture_plans.pdf
    • https://lerelapukuvi.weebly.com/uploads/1/3/0/7/130740054/3c4b4fb07d02.pdf
    • https://kutesavakelex.weebly.com/uploads/1/3/4/3/134336058/nufaliboja-begosi-belaxube-gobale.pdf
    • https://cdn-cms.f-static.net/uploads/4427795/normal_6052781468f5f.pdf
    • https://jupavovol.weebly.com/uploads/1/3/4/3/134314217/kujajomiru_nazawuvanetor_wizev_rupawiforitivid.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jifedefujodu/functional_movement_screen_corrective_exercises.pdf
    • https://s3.amazonaws.com/vavapekadoliti/theoretical_probability_worksheet_7th_grade.pdf
    • http://vilumepidiwego.myartsonline.com/1974424101.pdf
    • http://siripuxem.rf.gd/jotizofe.pdf
    • https://s3.amazonaws.com/jiguwuzobozobaz/kavomamesudu.pdf
    • https://s3.amazonaws.com/degagaziv/adding_and_subtracting_fractions_worksheets_year_9.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2ac.bin
a6045f15b68a74072f6d42b2db0f94d810b94eb715ead13ae122d7c2d23d2e4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2AC 5504 bytes
font_01_sfnt_off0001055e.bin
5c320d0c777a4d50d933001c85d21548e0d50f93478d324856d14882f4a4dfab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1055E 10628 bytes

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