Malicious PDF — malware analysis report

Static analysis result for SHA-256 75b8c17631c66a80…

MALICIOUS

PDF

82.1 KB Created: 2021-02-06 21:01:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 52632f5c0f585e91642acfeac8c9f911 SHA-1: eca9796a539f918bc8a51c66980578d5079e8b99 SHA-256: 75b8c17631c66a800aab980fa9b689f3f27ba9316422e6c6df575db78dd6d7e3
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://jottigo.ru/aws?utm_term=hima+das+interview+questions+and+answers PDF link annotation
    • https://cdn.sqhk.co/roratumopiv/h3jiMjd/ikea_hours_today_near_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423780/normal_6013cacf8ee79.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459640/normal_5fdf64f8635d4.pdfIn PDF document text
    • https://cdn.sqhk.co/depifozopupe/7ihdijb/live_tv_streaming_that_includes_local_channels.pdfIn PDF document text
    • https://cdn.sqhk.co/jonimaze/ehKNjdq/car_racing_rally_championship_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/navimoxa/Y5icchi/92350490948.pdfIn PDF document text
    • https://cdn.sqhk.co/madagijoj/O4nSgdh/lisarosoropi.pdfIn PDF document text
    • https://cdn.sqhk.co/doginifa/cLsudid/58822449895.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476569/normal_5fcbcf3329f33.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454043/normal_5fcb5ddc2204d.pdfIn PDF document text
    • https://cdn.sqhk.co/zuvomafoda/jxie8tK/jovujoz.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/golepe/android_textview_bold_partial.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/10148639701.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/guitar_pick_punch_sheets_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/instructing_solicitor_template.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_off0001066a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1066A 5180 bytes
SHA-256: b3fb10cb8731e255911cb3061664309d02019e2d6a247253f22d226e3ee07b9c
font_01_sfnt_off000117f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117F6 10552 bytes
SHA-256: 01757acb45c1240abff11c9c12a3b17dad136eaa6067edf4c53ceca84e5dd415