Malicious PDF — malware analysis report

Static analysis result for SHA-256 87971f61b337a9bc…

MALICIOUS

PDF

72.5 KB Created: 2021-02-26 21:36:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a07c7eece421629f8dc92812d8be9173 SHA-1: e82df58cc3b1e277e1faf606e27bf1d0e1e9faa9 SHA-256: 87971f61b337a9bce8f915d4041a971dcb9cc3050ad3dbc2017873e05e1cf43a
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pelibifir.ru/award?keyword=a+little+life+chapter+1+summary PDF link annotation
    • https://govonomuvilikiw.weebly.com/uploads/1/3/4/6/134620083/5215907.pdfIn PDF document text
    • https://zojivevu.weebly.com/uploads/1/3/6/0/136090852/21092cb.pdfIn PDF document text
    • https://cdn.sqhk.co/kelanadu/jgesmN0/famoridomijuwanaja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467612/normal_602f7acaa6650.pdfIn PDF document text
    • http://bazis-rostov.com/logistics_and_supply_chain_management_for_mba6wxsp.pdfIn PDF document text
    • https://cdn.sqhk.co/pesasotiro/jhjasTD/christian_songs_about_prayer_and_fasting.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464327/normal_5ff7c72d48221.pdfIn PDF document text
    • https://cdn.sqhk.co/zirigajer/l4UIxii/walafo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369174/normal_6007abd3608c6.pdfIn PDF document text
    • https://cdn.sqhk.co/jagakutojut/gp1Zjfr/elements_of_design_texture_photography.pdfIn PDF document text
    • https://cdn.sqhk.co/tegatiwuwax/jd5Siip/thai_alphabet_pronunciation.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418764/normal_5fe99a0b20f18.pdfIn PDF document text
    • https://nutifikidejuz.weebly.com/uploads/1/3/4/3/134347692/e2f6eeee96af83a.pdfIn PDF document text
    • http://xsale.trade/3229373046ldqhf.pdfIn PDF document text
    • https://lizotolagodega.weebly.com/uploads/1/3/4/4/134495854/3229032.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428033/normal_602798311cc0c.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/buponuwebi/baahubali_2_tamil_movie_free_isaimini.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/what_is_the_difference_between_cradle_to_cradle_and_cradle_to_grave.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/kakasaparodakibema.pdfIn PDF document text
    • https://s3.amazonaws.com/wovisak/bepod.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/another_eden_tome_guide.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_off0000e024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE024 5396 bytes
SHA-256: 322722540c1404fa30d991c410b061ac0c8717457731c5ee91fe624144a98b19
font_01_sfnt_off0000f267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF267 10100 bytes
SHA-256: 95149a3e670454bb2309efc08e7fd416152653ce0619a6a844198a2cd68b3b4f

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