Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e355052a4854eac…

MALICIOUS

PDF

51.6 KB Created: 2020-10-04 15:11:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 49b5794e4d460326ae0beaeb48fb308f SHA-1: 76895662b0529ac61541ca7db25aea47d580fb27 SHA-256: 2e355052a4854eac359fda75c0db5bf4fecad3ab9893d14a077489d765ff0cfb
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://cctraff.ru/strik?keyword=pes+2015+demo+indir+gezginler In PDF document text
    • https://site-1043837.mozfiles.com/files/1043837/22452804949.pdfIn PDF document text
    • https://site-1037160.mozfiles.com/files/1037160/jamase.pdfIn PDF document text
    • https://site-1037160.mozfiles.com/files/1037160/10293282296.pdfIn PDF document text
    • https://site-1036744.mozfiles.com/files/1036744/bukul.pdfIn PDF document text
    • https://site-1037218.mozfiles.com/files/1037218/dosexumudokuxezewodo.pdfIn PDF document text
    • http://files.jskennelsandtraining.com/uploads/1/3/1/3/131379183/wopajonunegudaf.pdfIn PDF document text
    • http://moxet.ucelitebasketball.com/uploads/1/3/1/3/131379554/romiwes.pdfIn PDF document text
    • http://files.mtbo-sui.com/uploads/1/3/0/7/130738497/01ecb7.pdfIn PDF document text
    • http://files.metjeffuk.com/uploads/1/3/1/4/131407965/pumemor.pdfIn PDF document text
    • http://files.stmarysmidleton.com/uploads/1/3/1/6/131607131/vawugalala.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/1/0483/2283/8692/files/google_az_news.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9206/4933/files/3.5_summon_monster_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9870/4546/files/when_is_paranoid_on_itv_show.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5884/6110/files/first_mile_warranty_refund.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2089/3864/files/4115227873.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ed484f1-eb7d-4806-b76b-173569f80ca4/59206598237.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b1e7c56-9f85-4f47-9b21-596cf27e27db/javisukizopumutozuxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cfbdde9-4e04-4c7b-aaac-8efcf956ff23/48028470891.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6015500f-8128-4757-9e64-acf092c2f33c/gezixukavutu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f362722f-11c9-4eb7-bf57-f8392cf7ba33/binexepupevajudapu.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_off00008818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8818 5436 bytes
SHA-256: b80737a6453ee296bb768d82b8595ae9cb5987ab038a033a9c3501aa698a930a
font_01_sfnt_off00009a99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A99 11808 bytes
SHA-256: 7349f12c56f60a5097fbb40e49d4fddcb3bd93c5764f7e68437b76efb5ec8f61

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