Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eb451dc920d5a9e…

MALICIOUS

PDF

70.4 KB Created: 2021-02-28 10:13:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0abe3a4800cf4fc0ab007df5d6e7c8d1 SHA-1: eca1ee322b37bc54dbe62c76e2ea86b68355ed34 SHA-256: 1eb451dc920d5a9ea2d275fb12e2a25d26d37ed5b1758deeb177bd9eea8fe7a2
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dugedepap.ru/award?keyword=blackmagic+intensity+pro+installation PDF link annotation
    • https://xoxoxiwozolem.weebly.com/uploads/1/3/0/7/130739626/gumep_gojudiwakudonix.pdfIn PDF document text
    • https://cdn.sqhk.co/zugeketinog/jhbcBp2/first_grade_math_worksheets_common_core.pdfIn PDF document text
    • https://cdn.sqhk.co/katafojedul/iicijgh/tap_titans_2_how_to_use_artifact_optimizer.pdfIn PDF document text
    • http://mobevusujezuno.22web.org/65025646001.pdfIn PDF document text
    • https://cdn.sqhk.co/tipekafomube/auPiahj/liwapot.pdfIn PDF document text
    • https://sufexijim.weebly.com/uploads/1/3/4/6/134679247/jomeje.pdfIn PDF document text
    • https://gulipuzajetag.weebly.com/uploads/1/3/5/3/135397689/f99c1f5a.pdfIn PDF document text
    • https://puraxexi.weebly.com/uploads/1/3/4/7/134718411/tetora-tidodalujadi.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/rakabexozu/lafevodizelovizuxidozazur.pdfIn PDF document text
    • https://s3.amazonaws.com/gogunabones/happy_new_year_video_song_kannada.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/22805644728.pdfIn PDF document text
    • http://gorevifero.epizy.com/kigexobafesisonal.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/how_to_open_sentry_safe_lost_code.pdfIn PDF document text
    • http://tasefabomodewiv.epizy.com/bootstrap_4_template_free_admin.pdfIn PDF document text
    • http://pujixedigegogup.epizy.com/android_phone_cases_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/26695054320.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/alight_motion_presets.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_off0000d75e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD75E 5468 bytes
SHA-256: ecf5d5d9d756bbe6f1821ecaaccd34f703e7a93dbc31b80fd24f63a43882cad9
font_01_sfnt_off0000e9f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9F7 9940 bytes
SHA-256: cbd2f36c7909bb9524a07d5a67dccaecfbc798911d2e72b0e55b3c01434b42ca