Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea612fed57041e14…

MALICIOUS

PDF

46.7 KB Created: 2020-10-18 00:01:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 3f652377d6080641939f3ca6a3263296 SHA-1: 63ab92dcdd5e38573a7bd4427ad90c53af789196 SHA-256: ea612fed57041e144464a35c53e844caa289e30678a05fdc5ad173e498d57077
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/123?keyword=python+programming+full+course+pdf In PDF document text
    • https://kidunaxu.weebly.com/uploads/1/3/1/4/131437100/aaa28a43.pdfIn PDF document text
    • https://tumixivig.weebly.com/uploads/1/3/1/6/131636813/52826de388de076.pdfIn PDF document text
    • https://zuwumepegowivos.weebly.com/uploads/1/3/1/0/131069935/2566094.pdfIn PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/9649549.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/5337016.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2613/5240/files/6821020961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/9331/0631/files/honda_ecm_2800_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4774/5698/files/road_dogg_jesse_james_badass_billy_gunn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2743/0059/files/convert_to_to_excel_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/5277/6603/files/anacondas_trail_of_blood_full_movie_watch_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/6763/0272/files/wow_classic_hunter_fast_leveling_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4432/1945/files/kuzowivigoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/4626/8828/files/fogapapevebabeziwisux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2094/9403/files/87452353736.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/506cf4fb-0cf2-4773-8a38-756131c27178/dajosu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22da2c07-5e3d-407e-84c4-056de97e489b/58354589707.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/637226cf-3737-4648-8bb0-d3d42612bab9/39480085812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1102/3270/files/vasabupus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8494/6850/files/43355340304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4902/4669/files/16627901788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/5772/4578/files/an_artwork_can_have_only_one_focal_point._true_false.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6247/2091/files/bellevue_ear_nose_and_throat_doctors.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_off000068d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D3 5552 bytes
SHA-256: 85f70d94d1bc408ad05ad96969d2c059390620f70ca98a0adc3c63f675da6ea1
font_01_sfnt_off00007b80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B80 10432 bytes
SHA-256: 04b20e385234574ec66641c0dceebe472d52f7b22ab153b0762847e45a63337b
font_02_sfnt_off00009ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EE2 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34