Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbbfca3f47719ae2…

MALICIOUS

PDF

43.3 KB Created: 2020-10-28 20:46:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 1abc738f4665e7cd119c01500007c3e6 SHA-1: 2ae4fb8546e49c75f8a3a4cc78418a1282e18df3 SHA-256: fbbfca3f47719ae281b9407cbb808a7620993ddf6d127d49cc9d73dc7a273ce6
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm with numerous embedded URLs, including a critical redirector link to 'gettraff.ru'. This suggests the document is designed to direct users to malicious infrastructure, likely for further exploitation or phishing. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://gettraff.ru/strik?keyword=how+to+wire+a+pool+pump+outlet In PDF document text
    • https://mogunugive.weebly.com/uploads/1/3/4/3/134381007/3a4d099f1fa.pdfIn PDF document text
    • https://kakawugob.weebly.com/uploads/1/3/0/9/130969990/vurafod_naworo.pdfIn PDF document text
    • https://mabanopovofed.weebly.com/uploads/1/3/1/4/131453130/vobifaz.pdfIn PDF document text
    • https://fidevawane.weebly.com/uploads/1/3/0/8/130814252/lojufizuzoziwakatu.pdfIn PDF document text
    • https://fisotewefupug.weebly.com/uploads/1/3/1/0/131071176/1601461.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/fcc3dcc8788bb23.pdfIn PDF document text
    • https://vosaxoro.weebly.com/uploads/1/3/4/4/134469305/f00b8449c0d.pdfIn PDF document text
    • https://nupejaxisolerez.weebly.com/uploads/1/3/4/3/134348845/napope.pdfIn PDF document text
    • https://derodaju.weebly.com/uploads/1/3/1/6/131606282/9216890.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/7832/6704/files/12_week_workout_plan_for_females.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1060/2661/files/new_carrollton_amtrak_station.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c2324a5-bfd3-4ea8-af2f-845563d72b5b/37353212547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4165/5454/files/8515007868.pdfIn PDF document text
    • https://s3.amazonaws.com/jevuxozazebazug/the_donald_j._trump_presidential_twitter_library_amazon.pdfIn PDF document text
    • https://s3.amazonaws.com/bejeseja/class_11_biology_syllabus_2018-_19.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/encapsulation_process.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4276/4962/files/41235251481.pdfIn PDF document text
    • https://s3.amazonaws.com/jevuxozazebazug/44106675659.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/50202484172.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80c5fed5-f8da-4e34-acf1-aa04137ba3a6/keygen_eobd_facile.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b916eaf3-25a5-4008-8095-ee97eab9177e/fight_club_movie_script.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/7954045951.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40632c20-52e6-49e1-87d7-2023a0096ca1/84188895704.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_off00006b8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B8E 4840 bytes
SHA-256: 042bcf9574493550ac60353adea75c3f4bb7eabf6c42c48e08dc242df2144b3d
font_01_sfnt_off00007bfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BFC 11004 bytes
SHA-256: 0c867ad7e6bc58eda6b6142d491f9d049fb802940b3c4b477763a31e172e5b52

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