Malicious PDF — malware analysis report

Static analysis result for SHA-256 3448bfcc4be6bae4…

MALICIOUS

PDF

71.8 KB Created: 2021-02-13 14:42:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 110699bc90c0746806be2483cfe56fb8 SHA-1: 22fde67155a3960f82ea4db7df01957e52469e78 SHA-256: 3448bfcc4be6bae4c4ca80dac761deb1f6ad0da9412303fcf9705acf1f21d5f9
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://maypoin.ru/wix?keyword=pso2+braver+guide+bow PDF link annotation
    • https://kikitepolo.weebly.com/uploads/1/3/4/5/134514310/7011628.pdfIn PDF document text
    • https://fevujuwevu.weebly.com/uploads/1/3/0/8/130813851/8054428.pdfIn PDF document text
    • https://bativazuwa.weebly.com/uploads/1/3/0/9/130969541/9796916.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370087/normal_601cbefdf40f8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409797/normal_60067ff856dc0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377704/normal_5fddaf44648f8.pdfIn PDF document text
    • https://vabisoxapulaji.weebly.com/uploads/1/3/4/4/134444495/5353d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453334/normal_5ff2330c17ecf.pdfIn PDF document text
    • https://ginixagizelak.weebly.com/uploads/1/3/5/3/135349131/rikusiven-zizafodaxi.pdfIn PDF document text
    • https://babotiditufo.weebly.com/uploads/1/3/4/6/134694550/viborevuw_zururokazowo_piviludo.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/dudigonifu/ferumupegezafun.pdfIn PDF document text
    • https://s3.amazonaws.com/tevomenil/baba_yetu_choir_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/7689272322.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/info._applicate._airport_app_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/wowag.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/modifiers_adjectives_and_adverbs_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/hospital_bed_2d_cad_blocks_free.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_off0000dc67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC67 5384 bytes
SHA-256: 91bba7dadaf38633d99a523969ee22632cf4030408d43be113162bdafa01213b
font_01_sfnt_off0000eeda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEDA 10364 bytes
SHA-256: 41c7720d111f0e3b4fac6110f539a84f98f40bb9f7040ee2b8198590bc8a61cd