Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1148731378ff17b…

MALICIOUS

PDF

68.5 KB Created: 2021-06-03 14:26:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e21586e7d2eb0dba2ab362275903385a SHA-1: b5b2cc418d65e1df89a12e5e9f69f42e7ded05cd SHA-256: d1148731378ff17b46a48e273e8af6d5f1a224ff88f66e84cb97fd8d559cca29
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dafemum.ru/123?utm_term=bengal+tiger+movie+tamil PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4376382/normal_5ff2dc1243995.pdfIn PDF document text
    • https://ladukupubavar.weebly.com/uploads/1/3/0/7/130776836/e8b9c207231984.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491936/normal_600f8f8933967.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409801/normal_601cea3b3d1c4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409609/normal_5fec910c003ec.pdfIn PDF document text
    • https://fozivumi.weebly.com/uploads/1/3/4/7/134761275/lelegoxepu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385216/normal_6011ea64a19e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368954/normal_602456214e632.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505363/normal_6025f4ca33d75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366029/normal_606e6f98873ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426409/normal_6053162f47c30.pdfIn PDF document text
    • https://zepemotofilizag.weebly.com/uploads/1/3/5/3/135399015/pibalulebumeriwuzof.pdfIn PDF document text
    • https://dizalojowu.weebly.com/uploads/1/3/4/8/134866254/9523093.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465024/normal_5ff5d2d994eb7.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/4580bc1d-045e-4f51-bfbb-e36d8d406e42/simbologia_de_diagrama_de_flujo_de_proceso_industrial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f12ab3a-7424-4a11-9406-54350829f335/excel_indirect_function_row_column.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/901adeba-c1ef-485e-a26a-b5a96f661d95/photoshop_cc_2018_android_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4db2e4ea-4664-46ea-9028-b65daded4c2d/yogi_ramacharaka_science_of_breath.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ed27934-f74b-499e-ad69-cd55a91cbc69/xiberonodewubumumotavunub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6012e26f-aa0e-4b2f-9bb5-da08a8210a3f/444547711.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80b5e9aa-4376-4265-a488-bc53bfff40e6/hbs_730_battery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ecb796e-303f-44c0-9081-c2ca051d088c/ms_word_vba_insert_text_at_bookmark.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFEE 4936 bytes
SHA-256: 7817ab8e944e2ee45a47e7de8c4ca9511ff0cb4757e58a594b87232aaf14232d
font_01_sfnt_off0000e0af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0AF 10632 bytes
SHA-256: fac187280a863e0b1351e39565c579d052326114def9105db3b94ebfb866c6aa

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