Malicious PDF — malware analysis report

Static analysis result for SHA-256 a02b99534d759823…

MALICIOUS

PDF

71.7 KB Created: 2021-02-28 12:12:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b242184cf1a25a7d280eea2a0d50e826 SHA-1: 0856a3380468b302dd74b73a4d029eb08b32fc77 SHA-256: a02b99534d759823cc6b15542a7cf97a841319d2e8454452f4ea47e0132da061
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://zajinet.ru/award?keyword=glencoe+geometry+chapter+1-5+answers PDF link annotation
    • http://goodxday.xyz/84895715304lyvn6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453336/normal_6005d6a4c4e73.pdfIn PDF document text
    • http://hookup157.site/xelokinuxoxovplz6i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411001/normal_603b09254bc24.pdfIn PDF document text
    • http://rixorevu.getenjoyment.net/64296744468.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505102/normal_5fe4182230106.pdfIn PDF document text
    • http://erkutungotu.com/is_coleman_fuel_the_same_as_kerosene3o4b6.pdfIn PDF document text
    • http://xogunajeraxuda.mywebcommunity.org/ferrari_458_spider_racing_wheel.pdfIn PDF document text
    • http://modezewop.mygamesonline.org/perdona_si_te_llamo_amor_trailer_english.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/naxozelozude/alexander_graham_bell_telephone_information_in_marathi.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/custom_validation_template_driven_form_angular_4.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/what_is_the_weight_of_an_empty_plastic_water_bottle.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/dolphin_emulator_android_adalah.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/illinois_link_card_income_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/81152927634.pdfIn PDF document text
    • http://vawirir.atwebpages.com/kawezivetonuwoka.pdfIn PDF document text
    • http://vubelifijam.atwebpages.com/how_to_size_a_transformer_for_a_motor.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_off0000d948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD948 5780 bytes
SHA-256: 2406f2f0175b18790d14086ca55b10a3ac9ab4442a4b307086ac1a75d743ac72
font_01_sfnt_off0000ecf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF3 10844 bytes
SHA-256: 015313af657658e07a320d9f395d04ed0f42127fbad46d5eb53ab0fbc0ee6d3b