Malicious PDF — malware analysis report

Static analysis result for SHA-256 56ad18412489fefb…

MALICIOUS

PDF

70.5 KB Created: 2021-01-12 10:02:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: ca46f23c542689c352c7f76552c85fb1 SHA-1: 842535a46c3e3daf9e03c12785f4490128dab2e1 SHA-256: 56ad18412489fefbc732f2be6c96db96f392bceeb789e21d7d5b29703aa5481a
244 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/wb?keyword=pulse%20secure%20client%20vulnerability In PDF document text
    • https://sudateneturoxa.weebly.com/uploads/1/3/4/3/134322726/deludemute_bunanex.pdfIn PDF document text
    • https://zewuxufasebi.weebly.com/uploads/1/3/4/3/134320084/popixisodeberan.pdfIn PDF document text
    • https://site-1178040.mozfiles.com/files/1178040/36694799356.pdfIn PDF document text
    • https://juladuwupib.weebly.com/uploads/1/3/4/7/134763366/wagewadun.pdfIn PDF document text
    • https://site-1195783.mozfiles.com/files/1195783/creative_brief_for_video_template.pdfIn PDF document text
    • https://site-1180637.mozfiles.com/files/1180637/five_nights_at_freddy_s_4_gameplay.pdfIn PDF document text
    • https://site-1197512.mozfiles.com/files/1197512/summon_dragons_codes.pdfIn PDF document text
    • https://nelemiken.weebly.com/uploads/1/3/4/7/134704654/mikerepa.pdfIn PDF document text
    • https://site-1200667.mozfiles.com/files/1200667/dmv_license_plate_lookup_south_carolina.pdfIn PDF document text
    • https://vipomumukewa.weebly.com/uploads/1/3/0/8/130813786/2a6d3535ddfdba4.pdfIn PDF document text
    • https://nuvefiwepopowu.weebly.com/uploads/1/3/4/5/134502743/c6f345d.pdfIn PDF document text
    • https://site-1177122.mozfiles.com/files/1177122/battlelands_royale_online_generator.pdfIn PDF document text
    • https://site-1174993.mozfiles.com/files/1174993/last_card_rules_joker.pdfIn PDF document text
    • https://site-1175252.mozfiles.com/files/1175252/mirawatatugipazela.pdfIn PDF document text
    • https://site-1167973.mozfiles.com/files/1167973/square_bird_cage_video.pdfIn PDF document text
    • https://site-1166653.mozfiles.com/files/1166653/44194049768.pdfIn PDF document text
    • https://site-1176527.mozfiles.com/files/1176527/vejezobazafi.pdfIn PDF document text
    • https://vaferevipesefur.weebly.com/uploads/1/3/0/9/130969420/9f539ff643349.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d947.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD947 5096 bytes
SHA-256: d6f509b25d25fd73e9ff0085d3f637bc2e9e1a882017ce7a96564385dca13a90
font_01_sfnt_off0000eaba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEABA 10000 bytes
SHA-256: 18a0bdc5e6a4621c350a6004d1d9926d6fc9743fb47a4919e91e2ffc495d677d

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