Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b643e2b20447c6d…

MALICIOUS

PDF

348.3 KB Created: 2021-05-22 15:41:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: f128c680085fbaf4df3782b1977cf60f SHA-1: c26576e150251f24d2af2bc49aa02fe1265e30be SHA-256: 5b643e2b20447c6deda23b0deaca0bc2f3665535eb798afac65303912028cdb4
136 Risk Score
Tags
free-cdn-ebook-manual-lure

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 heuristics suggest it functions as a phishing lure, using an image and text related to 'Uniformes para dream league soccer 2016 barcelona' to redirect users to external URLs. The primary redirector URL identified is https://golowaki.ru/strik?utm_term=uniformes+para+dream+league+soccer+2016+barcelona, which likely leads to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9455

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://golowaki.ru/strik?utm_term=uniformes+para+dream+league+soccer+2016+barcelona PDF link annotation
    • https://nugasoxitobaj.weebly.com/uploads/1/3/2/7/132710773/4795102.pdfIn PDF document text
    • https://pevaluxuduta.weebly.com/uploads/1/3/4/5/134502983/a9d20dec007e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379053/normal_5fee091983a79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383704/normal_6033fc08d5aa9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500444/normal_5fc8bf4ccac10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411229/normal_601672194a25c.pdfIn PDF document text
    • https://rogupogadagome.weebly.com/uploads/1/3/1/3/131398605/sinesunevo-futofuxu-zavebefajapeku-wofadupabu.pdfIn PDF document text
    • https://finijigif.weebly.com/uploads/1/3/2/6/132681422/bituzu.pdfIn PDF document text
    • https://gipalefujujal.weebly.com/uploads/1/3/1/3/131379678/4830866.pdfIn PDF document text
    • https://wadagoxegoti.weebly.com/uploads/1/3/4/3/134385229/zogevu-sagometilo-gumukafa.pdfIn PDF document text
    • https://kuzigojuzomuw.weebly.com/uploads/1/3/2/6/132683135/xejiwabitezuma.pdfIn PDF document text
    • https://pafetujesotizi.weebly.com/uploads/1/3/5/3/135348857/mesuwuw_risugajikun_fojoguv_sofukinen.pdfIn PDF document text
    • https://josifajine.weebly.com/uploads/1/3/4/7/134761936/puramafape.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476001/normal_603e2e0749a5e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9252a3fb-114b-4631-84bd-1894555f374a/navy_boot_camp_training_requirements.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf04600e-c689-4d14-8189-f0f6c27348c9/51089654042.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e19bec15-19ce-4c86-af65-8848aa5facc5/wugawe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc67208c-4d3f-4203-a514-9dbfa657a1da/why_is_my_dryer_not_fully_drying_my_clothes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/658e1974-f8fd-4dc3-b085-6d6343c38b93/zemikularinirufujilidila.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9200e34-f530-4c79-8e2a-5c2507368c8d/9565251641.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38365925-6292-4be2-a546-696821281321/fairy_tail_anime_seasons_on_netflix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69abfa4d-4281-49de-80c8-806a1e4f5331/craftsman_10_table_saw_motor_rm871.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/525863c6-e26f-446c-a2c2-137eb37b6916/mini_gs_freak_barrel_kit.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000502b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x502B6 6084 bytes
SHA-256: c82c10e565c92baf76540fd2706ac070421386c57795cf2df02beafe1d35ae08
font_01_sfnt_off00051757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51757 17760 bytes
SHA-256: dc5bc64a3f4ad21b4143c35ee74cedd00203337c96ac2b1cdcd749c0515aa8b6
font_02_sfnt_off00054980.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54980 16256 bytes
SHA-256: 7ffcc5fc11baebb37c9925c12fd1f18205fe51ac03a789aa4dd51b5d06e90ac5

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