Malicious PDF — malware analysis report

Static analysis result for SHA-256 6456e4617fee41cd…

MALICIOUS

PDF

73.2 KB Created: 2021-03-02 22:16:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 66e3fa63ff22f72b5c3a047edecde6fb SHA-1: 96be6eaba50cbcdc4f738ace08b1ee6b3f3ff1b2 SHA-256: 6456e4617fee41cd1135d315d04d068958ad5d6bb187d660541ab0de7e6ecad1
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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 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://crophysi.ru/award?keyword=2nd+edition+d%2526d+books In PDF document text
    • https://cdn.sqhk.co/vonirosidejo/hdnyXhz/commuter_cars_for_sale_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/resilano/HgigfF7/pudemazanusasi.pdfIn PDF document text
    • https://cdn.sqhk.co/poladejug/ajbzNii/novisezikegalalubo.pdfIn PDF document text
    • http://nokasosozigof.mypressonline.com/monster_in_law_full_movie_free_123movies.pdfIn PDF document text
    • http://muldwych.com/89680191182xylrq.pdfIn PDF document text
    • https://cdn.sqhk.co/josipinu/fCNieXL/plus_messenger_movie_download.pdfIn PDF document text
    • https://popetufuwude.weebly.com/uploads/1/3/1/4/131483025/1181a93702b24e.pdfIn PDF document text
    • https://semanipiji.weebly.com/uploads/1/3/5/3/135312460/9e8df0c.pdfIn PDF document text
    • https://cdn.sqhk.co/kokuxisa/ibhahcq/entergy_texas_power_outage_report.pdfIn PDF document text
    • https://lekaretuzej.weebly.com/uploads/1/3/0/7/130738752/bixemanopebov_sopelulad_bozoke.pdfIn PDF document text
    • http://scrlt.xyz/mongoose_dolomite_fat_tire_bike_manu6e89c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392668/normal_602a0e7ae34e5.pdfIn PDF document text
    • https://cdn.sqhk.co/bapisolel/eghapjj/pefelexelilemux.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C1 4128 bytes
SHA-256: dd6d26f15badc845c1c63b6d7f4bad7fdd6c783481a0efeb0d4f842290c18804
font_01_sfnt_off0000e7ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7CA 10152 bytes
SHA-256: 978bcddfdde37b9dab4f8c9d3b43dc04bd81093d59f7883160b73f86177b4d3b
font_02_sfnt_off00010a88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A88 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71