Malicious PDF — malware analysis report

Static analysis result for SHA-256 d22bee71e45b2309…

MALICIOUS

PDF

72.4 KB Created: 2021-02-12 04:02:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 73e187e12492cc7fb78ee66d7bb1c335 SHA-1: a035bde7371ef1cc20fd1a8092d9f1a8eda8d60c SHA-256: d22bee71e45b23091700c6eb5494e92b7b34cc9ef9ad5f28d821e721167160c1
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wix?keyword=myers+ap+psychology+unit+3+test PDF link annotation
    • https://xivovawa.weebly.com/uploads/1/3/4/8/134875493/4a6e7ebc5f9cb4.pdfIn PDF document text
    • https://nuniladolu.weebly.com/uploads/1/3/0/7/130775245/jisal-xutova-widosepuseki-gigufimerez.pdfIn PDF document text
    • https://mapaforidax.weebly.com/uploads/1/3/4/0/134012560/6572682.pdfIn PDF document text
    • https://sixikubirosepup.weebly.com/uploads/1/3/3/9/133997641/tujov-niwojagomogax-miravejijufima.pdfIn PDF document text
    • https://tonituligavu.weebly.com/uploads/1/3/4/8/134884188/japolajagofo.pdfIn PDF document text
    • https://vuxilimibipemop.weebly.com/uploads/1/3/1/4/131453056/soxesefeda.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/bokofapig/36719434272.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/bejule.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/live_streaming_video_er_firefox.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/aikido_ground_fighting.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/rogers_tv_channel_guide_brampton.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/16520857420.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/spondylosis_deformans_dog.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/accuracy_and_precision_worksheet_tes.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/95977808772.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/pebesepo.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/civilization_android_port.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/72831041723.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/93109533315.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/jazz_piano_sheet_music_christmas.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/manualidades_faciles_de_hacer_para_halloween.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_off0000ded8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDED8 5468 bytes
SHA-256: 3a142743b4febf40fe2eda35174b5860cd2f8687fdd18d97a193246d31c32358
font_01_sfnt_off0000f187.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF187 10220 bytes
SHA-256: e448662633df7da84a6b0e67cc1343133c0756524366c3e5da21b5b271c40ae4

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