Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd02e573b76d6153…

MALICIOUS

PDF

69.2 KB Created: 2021-02-15 12:39:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f7a77e59d96e36d3bbf8ef37041a2f43 SHA-1: 07b5e2df6bd01cd2cf5b4b014e9cf6213939bb44 SHA-256: fd02e573b76d6153b77c5320048982e106799a37c614a10996bbf8f553a44145
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://leonvi.ru/wb?keyword=burger%20king%20whopper%20patty%20nutrition PDF link annotation
    • https://jaweditulopo.weebly.com/uploads/1/3/4/3/134313576/1100841.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445114/normal_600907a247652.pdfIn PDF document text
    • https://cdn.sqhk.co/tajaketo/dI0cgcN/hockey_stars_game_download.pdfIn PDF document text
    • https://gonotelavekufuf.weebly.com/uploads/1/3/4/6/134615299/rawikirodukujujono.pdfIn PDF document text
    • https://rigafimer.weebly.com/uploads/1/3/4/9/134901715/be5b94f6f2037.pdfIn PDF document text
    • https://lenexemumuvag.weebly.com/uploads/1/3/1/4/131438583/3c88bc878.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488560/normal_5fe2273c3e96c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459025/normal_5fe9636239881.pdfIn PDF document text
    • https://cdn.sqhk.co/kekotenonaxu/ajp51jb/12459216716.pdfIn PDF document text
    • https://nalelijuw.weebly.com/uploads/1/3/4/5/134512153/wirututime_rabaduridenama_zetogusasesa_runowotiwulu.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/mubemutolewe/72805368147.pdfIn PDF document text
    • https://s3.amazonaws.com/moduluzuxikari/voids_wrath_crazy_craft_2._2.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/81751666985.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/6_agents_of_socialization.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/28743585645.pdfIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/27397870369.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/showbox_onto_android_box.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/nipuzikom.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_off0000d3a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A8 5180 bytes
SHA-256: 98c0a70b9e99401672f39de42f1a447c084e5e90eab6c0d35a21000c141057b1
font_01_sfnt_off0000e560.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE560 10120 bytes
SHA-256: db1176f3a94b67af478a88cb8888fb05f395b628e4bf29c54c6f95b38731e616