Malicious PDF — malware analysis report

Static analysis result for SHA-256 0611877422af3ddf…

MALICIOUS

PDF

69.4 KB Created: 2021-02-13 02:25:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a2a21e1a96159236e384d2a01d827084 SHA-1: a0680428b62600c9ab02768fe33196e6accc5bfd SHA-256: 0611877422af3ddf0e8d5f2c2675ec42cde993d89cbcd18987916efcc70089fe
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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.
  • 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://yafferge.ru/wix?keyword=twin+maple+gardens+apartments+cincinnati In PDF document text
    • https://cdn-cms.f-static.net/uploads/4445104/normal_601b432130725.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412909/normal_5fe86c546179d.pdfIn PDF document text
    • https://gojamomajaso.weebly.com/uploads/1/3/4/6/134616238/warebudin-miruzobamuzi-vimagarep.pdfIn PDF document text
    • http://maturibcgj.space/avast_antivirus_apkpures8xmd.pdfIn PDF document text
    • https://gobazivow.weebly.com/uploads/1/3/1/0/131070387/7600381.pdfIn PDF document text
    • http://carinsusa.com/best_formal_dress_combination_for_interview3ps6q.pdfIn PDF document text
    • http://vatasefapulik.iblogger.org/ledidixuwe.pdfIn PDF document text
    • http://natikolom.site/cabela_s_big_game_hunter_downloadzket9.pdfIn PDF document text
    • http://repair-foto.ru/movie_material_cast9f70o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416132/normal_5fcdf42f4d68c.pdfIn PDF document text
    • https://jazujopu.weebly.com/uploads/1/3/0/8/130873842/5635714.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498376/normal_5ff64ca029826.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mulerux/jobule.pdfIn PDF document text
    • http://tanikotik.epizy.com/66340474371.pdfIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/99071257003.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/22940441576.pdfIn PDF document text
    • http://jipinasin.epizy.com/96873592486.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/glencoe_health_chapter_28_review_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/dozuga/demand_forecast_sheet_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/lekezaru/vajuxilupixuje.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c585.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC585 5436 bytes
SHA-256: b26614548c681823fbdba39a71e9671c606c6dc841100944b2159492ce540a84
font_01_sfnt_off0000d7f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F0 3020 bytes
SHA-256: 18e45955201a23b793f68c532234ba8da8578948380ea945102975416aacce78
font_02_sfnt_off0000e478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE478 10340 bytes
SHA-256: 19e2d65784bca329322ecb82c7cdd0f6e783fb8ed9a06c8b3da1c7cb34e3d86f

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