Malicious PDF — malware analysis report

Static analysis result for SHA-256 f75c45d2a0074652…

MALICIOUS

PDF

68.5 KB Created: 2021-02-28 05:53:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e7cb4566c51b5b23822d116b1aadef4d SHA-1: b1af945ccb08f9e336b7ab1f949abca720317896 SHA-256: f75c45d2a00746529a329b6a27d06c64f57d7e5c0452ee3706af92a6de775b37
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://resalured.ru/award?keyword=is+you+before+me+on+netflix PDF link annotation
    • https://tiseworadew.weebly.com/uploads/1/3/5/3/135317060/kurilofipujekikesun.pdfIn PDF document text
    • http://ubsvp.com/licensed_to_ill_zipah70h.pdfIn PDF document text
    • http://gixipures.sportsontheweb.net/audio_technica_at-lp60-bt_skipping.pdfIn PDF document text
    • https://nejotadig.weebly.com/uploads/1/3/1/1/131164569/b04ec.pdfIn PDF document text
    • https://benefirezunaxo.weebly.com/uploads/1/3/4/8/134864331/jazevitujorefif_fikefi.pdfIn PDF document text
    • https://rupogasonewu.weebly.com/uploads/1/3/4/6/134653860/6019326.pdfIn PDF document text
    • https://bixagitiwor.weebly.com/uploads/1/3/4/6/134618264/2108230.pdfIn PDF document text
    • http://cashthe.ru/dakerarenaw215v7.pdfIn PDF document text
    • https://kewatedodi.weebly.com/uploads/1/3/0/7/130776291/c2aa1c37bc669.pdfIn PDF document text
    • https://bexavulurezil.weebly.com/uploads/1/3/0/7/130738929/7577366.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/xidulumexi/cara_video_dari_twitter_untuk_android.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/teri_meri_ankahi_dastan_video.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/juribeb.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/sentence_rearrangement_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/anm_form_date.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_off0000d0a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A7 4952 bytes
SHA-256: 56fc61e90a0e98853763a5a264c1272aeef601419f903a337b6682c142cfbb3d
font_01_sfnt_off0000e175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE175 10288 bytes
SHA-256: 117f6f110ee8133768a1c17d03df70a62e2dd438fb45e94b66a761f2da664df5