Malicious PDF — malware analysis report

Static analysis result for SHA-256 286f01d11fcb1bed…

MALICIOUS

PDF

94.5 KB Created: 2021-03-06 05:49:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 4147fca4647b15111a8c87c4c00acb01 SHA-1: 575460c8dc12a2116ed12f2b76db5fe4c69099e9 SHA-256: 286f01d11fcb1bed54af18e26a4b5bb26c4683cbd2407d10d448a75b2934c2ad
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a technique often used in SEO spam or phishing campaigns to direct users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to exploit users seeking specific information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://jacksth.ru/wix?keyword=flvs+spanish+1+segment+2+exam+answers PDF link annotation
    • https://lipuxavevafip.weebly.com/uploads/1/3/1/3/131398459/tuzojigaba.pdfIn PDF document text
    • https://cdn.sqhk.co/jitolado/ugfibhj/27483809362.pdfIn PDF document text
    • http://subejewumo.scienceontheweb.net/ryobi_leaf_blower_40v_home_depot.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449984/normal_5fe0fb0f19585.pdfIn PDF document text
    • https://sukigemanewa.weebly.com/uploads/1/3/2/6/132681928/xubid.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454422/normal_5fef6d38efd94.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486033/normal_5fe2c47dad526.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383704/normal_5ffcd65aa3a22.pdfIn PDF document text
    • https://cdn.sqhk.co/sejixikerut/agjYhgy/dream_fashion_shop_3_mod_apk.pdfIn PDF document text
    • https://muvisodujop.weebly.com/uploads/1/3/4/3/134358588/tofajurutetazur.pdfIn PDF document text
    • http://basagutidabe.sportsontheweb.net/fantastic_beasts_and_where_to_find_them_movie_netflix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490274/normal_5fd1bc80bec4e.pdfIn PDF document text
    • https://barezixajeg.weebly.com/uploads/1/3/4/3/134318527/161959.pdfIn PDF document text
    • http://kipegujodup.getenjoyment.net/rheem_tankless_water_heaters_reviews.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496005/normal_5fe29c5394b90.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376369/normal_5fce4862bb55a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503617/normal_5fe1279cee217.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b2d1eea7-aef5-47fc-962c-88b5513ecafc.filesusr.com/ugd/3a57bc_3039a960b25d415f937f24b5a30c8940.pdf?index=trueIn PDF document text
    • https://b56e00ce-d729-42e9-814b-b9a4b194f5ba.filesusr.com/ugd/f6f93f_e1553c4256de4113a43b796737c710ba.pdf?index=trueIn PDF document text
    • http://medexode.atwebpages.com/tamil_novels_free_download_ladyswings.pdfIn PDF document text
    • https://0cfe495c-9a5f-46a1-a5f3-fb21b6211bac.filesusr.com/ugd/7aabb2_0d0e7ac79d044bc7b181e8492f61f7b5.pdf?index=trueIn PDF document text
    • https://9f53eded-325d-4e02-8430-7c09bd872488.filesusr.com/ugd/e04405_e757a82c904046cab1e77f41a689d7e3.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011b14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B14 3620 bytes
SHA-256: a827bcd1af3225899068dec674e37a9d2f6d6f10752db9656ad76e0aeeb75756
font_01_sfnt_off00012805.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12805 5592 bytes
SHA-256: 8409ca510443131ca83cda7954870ec9ae2a60bf5b96eb196307798e4158fe1f
font_02_sfnt_off00013b03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B03 15880 bytes
SHA-256: aad50334570e1a83ffc96ad16c8ed5688b2687e8fda6b0911e867016447fa9ba

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