Malicious PDF — malware analysis report

Static analysis result for SHA-256 5472daedfc3ee5c8…

MALICIOUS

PDF

78.9 KB Created: 2021-05-31 06:28:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 5db14e164115041e0ea4ffb385941432 SHA-1: d63c1314744169eca00353f8f8ed8414e8a3cadf SHA-256: 5472daedfc3ee5c82b7f36ac25fb4202b3ab864a337958f8f2e90fde8316530b
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains a significant number of external links, identified as a PDF link farm, with a primary malicious URL pointing to 'baarspo.ru'. This suggests an attempt to direct users to malicious content or phishing sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://baarspo.ru/strik?utm_term=la+belle+et+la+b%25C3%25AAte+pdf+ekladata PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453734/normal_60660b6eec223.pdfIn PDF document text
    • https://pimelitapata.weebly.com/uploads/1/3/1/4/131454500/2281488.pdfIn PDF document text
    • https://tifajanos.weebly.com/uploads/1/3/4/8/134861866/vetoxogeg-sigomitiz-vesos-levivakukikog.pdfIn PDF document text
    • https://golamusexa.weebly.com/uploads/1/3/1/6/131606818/jiwipasofes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448550/normal_6018a36c51b19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369638/normal_60586a6dba7e6.pdfIn PDF document text
    • https://nebunabimumebu.weebly.com/uploads/1/3/4/4/134480995/sevar-nabikoku-dilakome-povidile.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443337/normal_5fd8d1272142c.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/c6d097fa-1610-434a-bfac-a389fe368f8c/misbehaving_thaler_audible.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/817f9d73-8110-40f9-b5f5-820531392831/babybjorn_potty_chair_vs_smart_potty.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef35dbde-1351-4823-b28c-edf8d9d9e4ed/22711799877.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bc8181e-5205-4927-82dd-d3176ea221dc/maderawejinesewofalutud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/763a7faf-ad5e-4948-ad2c-48c9dae05f55/drishyam_malayalam_movie_script_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29096cf2-2c4f-42af-b768-8d1a06526dec/como_descargar_documentos_de_scribd_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cea417bb-5204-4812-92cb-8d53cf0e122d/wobizizonorupitekinuwulop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0aa06498-a6a0-45d2-a32d-95d5abff8538/95574264537.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15841c8a-3ec7-4618-b794-662fee7b7a17/identifying_phases_of_the_moon_3_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a69130e2-5c75-44ec-a166-74870eacf2b1/easy_acoustic_guitar_chords_for_beginners.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_off0000f0ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0CA 5056 bytes
SHA-256: 3bf716fd727b903e6e570b0b3f9a17e5347bfda59671587d5f33260859e185a8
font_01_sfnt_off000101cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101CF 14332 bytes
SHA-256: 9e3ea6b74de734c675970ff5524d65fbaeaf0d45d8df7f35dbf87b0d05cb47bd

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