Malicious PDF — malware analysis report

Static analysis result for SHA-256 fab7da2032a9b675…

MALICIOUS

PDF

77.9 KB Created: 2021-06-01 05:00:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bbdaa3a0c79788c08890f30cc926424d SHA-1: 996cb2a56c0c7b6fe18a2918dd354c269ed23e7b SHA-256: fab7da2032a9b675084400abd36621ac11b67a14f29b7c4c131061a79326f0ed
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are structured as a link farm, suggesting a malicious intent to distribute content or redirect users to potentially harmful sites. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and ML classification further supports its malicious nature. The document body, though heavily obfuscated, contains text related to movie downloads, indicating a lure to entice users to click on the embedded malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 5

  • 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
  • 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://laborke.ru/pbw?utm_term=twilight+full+movie+in+hindi+part+2+online
    • https://cdn-cms.f-static.net/uploads/4472768/normal_5fe7770d98d54.pdf
    • https://gaxurorilapuw.weebly.com/uploads/1/3/2/3/132302857/b16a7ad543dc.pdf
    • https://govexofube.weebly.com/uploads/1/3/1/8/131872198/8044778.pdf
    • https://zorivaleguzovul.weebly.com/uploads/1/3/4/5/134596353/e8e419b73a.pdf
    • https://static.s123-cdn-static.com/uploads/4450512/normal_5fce932776b2a.pdf
    • https://cdn-cms.f-static.net/uploads/4487184/normal_601dfea2dfa0b.pdf
    • https://cdn-cms.f-static.net/uploads/4452376/normal_603d0af98d3f0.pdf
    • https://cdn-cms.f-static.net/uploads/4368246/normal_605df75758816.pdf
    • https://static.s123-cdn-static-d.com/uploads/4484118/normal_60b1c32f4b269.pdf
    • https://venakadu.weebly.com/uploads/1/3/4/7/134729608/fusujonubijepumule.pdf
    • https://gokokunebede.weebly.com/uploads/1/3/0/8/130874183/kebonoduwi.pdf
    • https://nelodukes.weebly.com/uploads/1/3/6/0/136085721/22600bc0a.pdf
    • https://static.s123-cdn-static.com/uploads/4486745/normal_5ff05e4d9ec3f.pdf
    • https://cdn-cms.f-static.net/uploads/4482413/normal_600a23c5ce2e0.pdf
    • https://susulipazelavig.weebly.com/uploads/1/3/5/3/135335994/tefalo-rujoxorop-wotasuzule.pdf
    • https://cdn-cms.f-static.net/uploads/4411696/normal_605dc8c654222.pdf
    • https://cdn-cms.f-static.net/uploads/4481064/normal_605de1e1b9afe.pdf
    • https://perufagumitaxa.weebly.com/uploads/1/3/0/7/130738779/vugugukoma.pdf
    • https://static.s123-cdn-static.com/uploads/4422150/normal_5fdcf3abe1659.pdf
    • https://static.s123-cdn-static.com/uploads/4453144/normal_5feb66423710e.pdf
    • https://cdn-cms.f-static.net/uploads/4413980/normal_6039a8b055aae.pdf
    • https://pufotesur.weebly.com/uploads/1/3/1/3/131378771/2842162.pdf
    • https://cdn-cms.f-static.net/uploads/4445338/normal_5fdbd659c42ed.pdf
    • https://nidupivulef.weebly.com/uploads/1/3/4/0/134042353/7671933.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sorawako.pbworks.com/f/best_free_autotune_plugin_for_audacity.pdf
    • http://risoxef.pbworks.com/w/file/fetch/144436713/forbidden_kingdom_full_movie_download_in_tamil_isaimini.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_off0000f31e.bin
fc1a7ea055d43bf9f4533d6c184311081d647b7a4ce43ac89fb7d27b60731f95		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF31E 5512 bytes
font_01_sfnt_off000105c9.bin
545bcc7bab0be542895b8fa697bcb04176a9e397c5c32c8b9f0c4637d4b7e8e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105C9 10656 bytes

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