Malicious PDF — malware analysis report

Static analysis result for SHA-256 024a86e2a1e03da4…

MALICIOUS

PDF

75.5 KB Created: 2021-03-02 14:39:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: bda33b596be7f3bb200e6d607c87df1f SHA-1: b54b737aea27e748fd7e45c8bca997b7dac96ef4 SHA-256: 024a86e2a1e03da49496354f67145311e45e14bdecec53ef15c210d61f46b8e1
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://golowaki.ru/aws?utm_term=que+harias+si+no+tuvieras+miedo+rese%25C3%25B1a PDF link annotation
    • https://lopuxewununoj.weebly.com/uploads/1/3/4/7/134748711/140cfe.pdfIn PDF document text
    • http://trendmobile.ru/hp_deskjet_2541_all-in-one_printer_copier_scannerf3obx.pdfIn PDF document text
    • https://turarizamagux.weebly.com/uploads/1/3/1/4/131453837/0c94fff35024a.pdfIn PDF document text
    • https://pelepidavivi.weebly.com/uploads/1/3/1/4/131454492/0435d9f84.pdfIn PDF document text
    • https://vuguzakinizole.weebly.com/uploads/1/3/4/4/134493236/lajosukofib.pdfIn PDF document text
    • http://ashotik.space/fefegigigqh6wk.pdfIn PDF document text
    • http://pc-remont.website/31488968212sb0cs.pdfIn PDF document text
    • http://nerroba.info/84375917wfa6d.pdfIn PDF document text
    • http://kompledom.com/zezunaps82.pdfIn PDF document text
    • https://kuxiwidozerapi.weebly.com/uploads/1/3/4/7/134728536/1587807.pdfIn PDF document text
    • http://help-verification.com/safizexarthqr.pdfIn PDF document text
    • http://instapriz365.online/octane_fitness_q37_owners_manual1wzz3.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/wefemabeni/platform_sandals_cheap_online.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/61648621007.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/biharwap_in_full_hd_video.pdfIn PDF document text
    • https://s3.amazonaws.com/zulezov/preacher_graphic_novel_collection.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/91922608979.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/pabiwutivewofare.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_off0000e6d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D7 5368 bytes
SHA-256: 29129012dd8ccd8bc3a02de11f38d204dec3e85303bf548710868e597dc404ce
font_01_sfnt_off0000f8ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8AD 11996 bytes
SHA-256: 5b7d4deb976f6a040a9db419de010a1b3c941fe9b82358266dd977872644fe1d

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