Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b60fe19dd7ed15e…

MALICIOUS

PDF

70.2 KB Created: 2021-02-25 22:24:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 306713f7ea06f3f755b111e08aec4f70 SHA-1: 341456956c331d7101fab0b6d4706edea8931bcc SHA-256: 9b60fe19dd7ed15e0fd06f08d3d2c90c1f4e86328053875014c083cbe7c8cbe3
262 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://yafferge.ru/award?keyword=manuale+arduino+starter+kit+pdf+italiano In PDF document text
    • https://pozimifekof.weebly.com/uploads/1/3/4/6/134674510/gowezalak.pdfIn PDF document text
    • http://ontrade.top/71041631537fg6b8.pdfIn PDF document text
    • http://deflecfcvy.best/birdy_grey_dresses_dusty_blue0gwce.pdfIn PDF document text
    • http://meetchambre.xyz/54452821163tgcps.pdfIn PDF document text
    • http://efarbok.xyz/hanuman_bhajan_mp3_free_download_gulyqjft.pdfIn PDF document text
    • http://trixy-matrix.space/twisted_treeline_guide_s8ix21x.pdfIn PDF document text
    • http://verifedform.com/vejimiseluxatifanodh96q5.pdfIn PDF document text
    • https://batozovij.weebly.com/uploads/1/3/1/4/131455337/3915799.pdfIn PDF document text
    • https://nemimatavowep.weebly.com/uploads/1/3/4/6/134692492/pokirixojusonep_namigukivitod_dovibopaga.pdfIn PDF document text
    • http://nubolats.xyz/calculating_mean_median_mode_and_range_worksheet_answersdg58o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426941/normal_5ff0a09dd2321.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gozenabuzixi.onlinewebshop.net/xirizugizenurisuzanu.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/eagle_american_flag_vector_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/funny_questions_and_answers_for_quiz.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/53870301944.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/agrologic_chick_scale_103_manual.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_off0000d71e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD71E 5104 bytes
SHA-256: 88fb8bb84932f5f7e2aadc8c3c51f577c7ec5f78c875513c2dfb840f8c20544c
font_01_sfnt_off0000e897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE897 10240 bytes
SHA-256: a78de26878a7731327bdf6e1edc6d9ad2e93a8eef5d23341003b39fecf45ae9a