Malicious PDF — malware analysis report

Static analysis result for SHA-256 053de789e44eab3c…

MALICIOUS

PDF

71.5 KB Created: 2021-02-19 21:48:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9be40c665512ffcf882eda4f8a85bfab SHA-1: 2529fdec5876ae95e7b16b25aefb39ecdbb08edc SHA-256: 053de789e44eab3cd715f52a3777d6490a343e6012489a2c5672ab0e95a7995a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/wb?keyword=whirlpool%20service%20company%20near%20me PDF link annotation
    • http://ita-bio.space/driving_school_ovilex_mod_apkbcmle.pdfIn PDF document text
    • https://nefarixuk.weebly.com/uploads/1/3/1/4/131407944/fopabeg_rojorup_gedemudukajuvu_misamenerupu.pdfIn PDF document text
    • https://zofigaxukinepir.weebly.com/uploads/1/3/4/2/134235574/jager.pdfIn PDF document text
    • http://sputnews.com/771648865080hc28.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378831/normal_5ff45aadb9b50.pdfIn PDF document text
    • http://ketotreno.buzz/27315232369apo9s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408712/normal_5fdd5dd1b4353.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484818/normal_5feb4ee593edb.pdfIn PDF document text
    • https://gazikurow.weebly.com/uploads/1/3/1/4/131452893/e85cc95a3.pdfIn PDF document text
    • http://gonzo-3d.com/trane_reviews_air_conditionerb5o8t.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/tuxexi/70818807884.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/18522096076.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/begum_jaan_movie_subtitles.pdfIn PDF document text
    • https://s3.amazonaws.com/dagasopones/oxidation-_reduction_reactions_practice_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wupuxus/zulotifulin.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/22617947525.pdfIn PDF document text
    • https://s3.amazonaws.com/wakuzidi/android_sdk_manager_java_version.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/app_store_not_ing_reddit.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_off0000db01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB01 5348 bytes
SHA-256: b0d618f90dda9d5ddf1de6f9d4fc7150fd26e765ea3fbdc359850d1987bb9392
font_01_sfnt_off0000ed17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED17 10552 bytes
SHA-256: 0ebf52fd06bbefd8c1884913d0f77976c771ef03b5de459c130503b393483f8d