Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1777bf17cf30228…

MALICIOUS

PDF

70.3 KB Created: 2021-03-06 13:48:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1e11ae5dad5e9c6b59e78cb9b514df87 SHA-1: 47fe87a42c89ca32c0f03bc0267772f92afcbb6e SHA-256: d1777bf17cf30228bd9de87d2279bd5c91a775896780f086a9976a2f91fef4c1
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://fokemale.ru/award?keyword=exam+cram+comptia+a%252B+pdf PDF link annotation
    • https://cdn.sqhk.co/bugolajoxodu/iieeWid/new_pet_baby.pdfIn PDF document text
    • https://cdn.sqhk.co/lemisobe/SdifhdW/lebasivurezidi.pdfIn PDF document text
    • https://wininivawad.weebly.com/uploads/1/3/1/4/131483201/rolafi-webuvuzozolig.pdfIn PDF document text
    • http://kulinar2020.site/ccboot_crack_2017xir5k.pdfIn PDF document text
    • http://torchland.xyz/school_uniforms_south_county_dublinu283h.pdfIn PDF document text
    • http://vajukadezazi.getenjoyment.net/power_cooker_xl_chicken_breast_recipes.pdfIn PDF document text
    • https://xakirajurupani.weebly.com/uploads/1/3/2/3/132303083/mazilig.pdfIn PDF document text
    • https://cdn.sqhk.co/temejikowewa/Riewkjj/korean_words._flash_cards._vocabulary_builder_app.pdfIn PDF document text
    • http://creditscorefix.info/bajaj_allianz_future_gainhzglr.pdfIn PDF document text
    • http://phrensy.co/291173898257mcnj.pdfIn PDF document text
    • https://nuniladolu.weebly.com/uploads/1/3/0/7/130775245/9875177.pdfIn PDF document text
    • http://winclean-shop.space/pfx_file_certificate_download_for_androidjb1c0.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/pafexegud/coloring_sheets_jungle_animals.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/yantam_marathi_song_video.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/psychology_ciccarelli_white_5th_edition_answer_key.pdfIn PDF document text
    • http://widifusi.myartsonline.com/15659526593.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/flow_chart_template_word_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/34313392891.pdfIn PDF document text
    • https://s3.amazonaws.com/rerinago/9568380582.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/how_to_calibrate_a_vizio_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/hm_marketing_strategy_analysis.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_off0000d22c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD22C 5116 bytes
SHA-256: ec333c8d8b7a090e137fbf05c7918f4fde891e5eb18be898fe0c95bfde4862df
font_01_sfnt_off0000e389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE389 12036 bytes
SHA-256: 8075d131d99b4bc0acaadace854ebefb4ae5166ba1fb51fecf203616a7d64ec4

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