Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b29562814fede42…

MALICIOUS

PDF

50.1 KB Created: 2020-10-21 21:49:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 8e63070554e7567eb5ad9bb576906ef6 SHA-1: 13b1906f605dcc2b3f57d9b0cc777769cae2d19a SHA-256: 5b29562814fede4298aa4507b840b098853139bae70f1df5ec8fdf8fd13bc974
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://gettraff.ru/pify?keyword=beat+saber+game+for+android In PDF document text
    • https://ziripovopibew.weebly.com/uploads/1/3/0/8/130874468/tevoj.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/zutilipevozafeguwu.pdfIn PDF document text
    • https://fufivivol.weebly.com/uploads/1/3/0/8/130873849/119094.pdfIn PDF document text
    • https://samomalekadoj.weebly.com/uploads/1/3/1/4/131438786/xojona_vikirurob_xeforex.pdfIn PDF document text
    • https://mivosubewo.weebly.com/uploads/1/3/1/4/131407796/damumo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374986/normal_5f895197a7494.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366952/normal_5f8766667b6e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373998/normal_5f8e5d3b76aed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366661/normal_5f8758c733381.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365555/normal_5f86f597a2119.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000084b3.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000084b3.bin)
    • https://cdn.shopify.com/s/files/1/0431/7682/0890/files/vagekolegalegumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8392/6171/files/app_to_fix_red_eye_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6694/5447/files/89352535036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7859/7790/files/48839443211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7782/3400/files/soked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8535/5425/files/64635904818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0752/7077/files/ootp_perfect_team_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8609/4242/files/solving_logarithmic_inequalities_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6642/3456/files/south_garland_high_school_basketball.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3051/4344/files/94983743259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/2854/7237/files/mudosafoxowigazepifug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9586/0417/files/tumebejuxopamini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8902/5942/files/can_i_use_crutches_for_a_sprained_ankle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5663/5816/files/oliver_twist_questions_and_answers_for_class_7.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 extracted file (font_00_sfnt_off000084b3.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000084b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84B3 5384 bytes
SHA-256: 25aabf7dfa9c1cc808faa465dcffd94873b9a645dd93e3280c86b40bf23a713d
font_01_sfnt_off000096e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96E4 10472 bytes
SHA-256: 6e49b8d61edbd95d655e0ec2976e8c0cb7742406a46344a319913b87dbbb3d13