Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ab4c1313e644d7b…

MALICIOUS

PDF

70.0 KB Created: 2021-02-05 07:27:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 631a055b980b770dec2e94049f080ba5 SHA-1: 3613bca52bfa126321d352219172e0d8a5df9ef3 SHA-256: 5ab4c1313e644d7bb7d1f1066218b3a2c3fe4d9896559508682eecca3635db84
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wb?keyword=making%20inferences%20worksheets%20ks2 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409256/normal_5fd2e63536ba8.pdfIn PDF document text
    • https://cdn.sqhk.co/pimupigedu/wjcgjtv/change_your_eye_color_naturally_with_lemons.pdfIn PDF document text
    • http://naturalm.space/wheel_of_fortune_game_show_quoteszkkpf.pdfIn PDF document text
    • http://terem.space/la_relation_de_confiance_selon_carl_rogersj0aae.pdfIn PDF document text
    • https://cdn.sqhk.co/womibakok/VOH2URL/sinilodegewezok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390092/normal_601a2cf557b8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464702/normal_6012e2cccb0f9.pdfIn PDF document text
    • https://cdn.sqhk.co/vipikunowi/hJ2jbD4/39651567277.pdfIn PDF document text
    • http://instapodarok365.site/46693393494cz9bk.pdfIn PDF document text
    • http://justamorem.com/32300959719whtui.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393029/normal_5fc95b2a5ac29.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402948/normal_5ff52965d478a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406170/normal_5fdd33a88e9b3.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/lukepepe/funza_lushaka_bursary_application_form_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/bergey_s_manual_of_determinative_bacteriology.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/19540741197.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/benik.pdfIn PDF document text
    • http://vudazirukileri.epizy.com/37214366344.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_off0000d3d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D5 5404 bytes
SHA-256: 4da490d97b65c6b6afdabd754fe2f48757215229fd74216f3607b20283959886
font_01_sfnt_off0000e65d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE65D 10832 bytes
SHA-256: 37bf84b10a6a4333a950ed3f3b633ecab72173874baea61ea1fdb4a4b752631c