Malicious PDF — malware analysis report

Static analysis result for SHA-256 f80ebe651cc6dabe…

MALICIOUS

PDF

75.3 KB Created: 2021-02-14 20:24:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 40515e48eb2aabfc609a8616a726d763 SHA-1: d7a28f768b487ad8f45ea5b0376e1163d3136abe SHA-256: f80ebe651cc6dabe94aaf43046719ffc731c4752b9ff93af54b1c3220563ca66
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://maypoin.ru/aws?utm_term=can+constipation+cause+weight+gain+yahoo+answers PDF link annotation
    • https://suzeziji.weebly.com/uploads/1/3/0/7/130739492/9e177b930833e7.pdfIn PDF document text
    • https://tiriwubesunadew.weebly.com/uploads/1/3/0/7/130739346/jifomekobawud.pdfIn PDF document text
    • http://helpcenterbusiness.xyz/newamukuxusijojalawbrdvg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366623/normal_6017dcef9c559.pdfIn PDF document text
    • http://simultaneously.space/activestate_python_2._784obw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404750/normal_601056a268e24.pdfIn PDF document text
    • http://rfs.team/overcoming_fear_of_failure_worksheet07fnb.pdfIn PDF document text
    • https://jozufibajas.weebly.com/uploads/1/3/0/9/130969385/xifinafawi_tuwirixoxifekan_tutevoziz_rezes.pdfIn PDF document text
    • http://reduslimitaly.website/basic_emotions_word_search_answersi2r3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493266/normal_601702c89e31c.pdfIn PDF document text
    • https://lizunega.weebly.com/uploads/1/3/5/3/135395432/89a1eb1c1.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/baxunaf/wepubusoz.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/avery_index_card_template.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/buy_credit_bureau_report_online.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/paper_bag_design_template_ai.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_off0000ea7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7D 5264 bytes
SHA-256: c0f31487fa8df3ac306b0b9314dc78998b876a6e9743fa43c527083f2ccec8ae
font_01_sfnt_off0000fc74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC74 10424 bytes
SHA-256: e8d08c8e85fb24b8ea4e3c3bcf691bcdfadedd34914d2d0ae754789f692c04ab