Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6de828663c47ef1…

MALICIOUS

PDF

67.0 KB Created: 2021-01-28 17:15:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f714fe25e5466b6790726a56be330b2a SHA-1: eebd5084203c03acc32d79692f2d4cbe7b522fd5 SHA-256: b6de828663c47ef11e2f28184761ae62a5daa3e35176abf75a454641bd88e50d
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://baarspo.ru/wb?keyword=traffic%20rider%20car%20game%20download PDF link annotation
    • http://good-production11.site/51952541313nqmcm.pdfIn PDF document text
    • http://1xbet-registrat.site/83851022248v5oej.pdfIn PDF document text
    • http://dostafood.xyz/xbox_booter_freeahlmm.pdfIn PDF document text
    • http://huaweistoreukr.xyz/stranger_things_season_2_streamaciem.pdfIn PDF document text
    • http://item-get.top/corpus_delicti_juli_zehzm24h.pdfIn PDF document text
    • https://fiwudarive.weebly.com/uploads/1/3/0/7/130775392/8433796.pdfIn PDF document text
    • https://pojojupekofep.weebly.com/uploads/1/3/4/7/134754506/folegagenadod_gosuxegobo_venajef.pdfIn PDF document text
    • http://reduslimitalia-oficial.site/jump_ball_hop_on_color_block8flz3.pdfIn PDF document text
    • https://dujililapute.weebly.com/uploads/1/3/5/3/135347223/69ecda1f.pdfIn PDF document text
    • https://motadonikedubi.weebly.com/uploads/1/3/1/8/131856170/gimen_davaw_tazipafakip.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/luramamelolem/78853251099.pdfIn PDF document text
    • https://s3.amazonaws.com/takurugilij/66433010261.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/lobezigema.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/compound_words_worksheet_with_pictures.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/zapil.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_off0000cc41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC41 5204 bytes
SHA-256: 2461e68482d1df6eaa43688b345c61c4700cd2696a9a74816970575a7c935060
font_01_sfnt_off0000ddf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF1 9716 bytes
SHA-256: bfaae592a565cb0e031ba51c2275bf1fdc177325df05aa697f5f234f83592ebc