Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8a7a36aabc88060…

MALICIOUS

PDF

73.9 KB Created: 2021-02-10 15:26:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1edf35e4d26beedd0c3b67798d8d414d SHA-1: 0484e90b86e7c17f336c61509b313e37057a7776 SHA-256: d8a7a36aabc88060ca57532ebbf8669e66861f5aa831f6dba7d033574dce9aeb
186 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://baarspo.ru/123?utm_term=greely+middle+school PDF link annotation
    • https://cdn.sqhk.co/wezikinupig/axjeXEc/dc_volt_amp_meter_wiring_diagram.pdfIn PDF document text
    • https://cdn.sqhk.co/febowozefu/rggihE5/bravelands_book_5_release_date.pdfIn PDF document text
    • http://storezone.info/55015078203rnfu3.pdfIn PDF document text
    • http://freefire-gifts.com/togenobiganifemutosabu8ru9.pdfIn PDF document text
    • https://cdn.sqhk.co/gexopoku/KQq5hjj/1437227416.pdfIn PDF document text
    • https://cdn.sqhk.co/gitovera/ejhVdgf/winimozepifevibidonupe.pdfIn PDF document text
    • https://cdn.sqhk.co/muvetowiripa/c0Tpjig/peacemaker_colorful_hexagon_tiles_2.pdfIn PDF document text
    • https://cdn.sqhk.co/volumusigu/hahiQib/95174078816.pdfIn PDF document text
    • http://kukushka.space/bhojpuri_video_song_dj_remix_2018azoy8.pdfIn PDF document text
    • https://koxoganonigowup.weebly.com/uploads/1/3/1/4/131408343/8025688.pdfIn PDF document text
    • http://jopkapopka.online/371454134540hv6c.pdfIn PDF document text
    • https://cdn.sqhk.co/xurinuwame/aheXUz8/top_100_most_wishlisted_games_on_steam.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wepirizifomonij.epizy.com/88902072024.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/97775738933.pdfIn PDF document text
    • http://seladetitogar.epizy.com/anthem_lights_albums.pdfIn PDF document text
    • https://s3.amazonaws.com/takurugilij/vidmate_ke_video_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/98429699046.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/mopemizajilifexawi.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_off0000e5c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C4 5104 bytes
SHA-256: ecf28ad0fdd377b838d7248180f63a4af7580965898f615b04f47fb119d3b629
font_01_sfnt_off0000f701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF701 10524 bytes
SHA-256: fab827a30e7453678f51460fc3b1f5fc1d5cea612f465ad8578e6e47657f8f96

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