Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2e2caa6f83e8188…

MALICIOUS

PDF

150.3 KB Created: 2021-04-17 05:22:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 4af04f74ac5147ef5f2c4450fef04cbb SHA-1: c6f75b680bd6522c0f0bd82b13ff313ebbcfdffe SHA-256: c2e2caa6f83e81882115dca41e1b82c91473653f986d098f092a85f0c89a4c75
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • 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://crophysi.ru/strik?utm_term=ovid+metamorphoses+book+1+poetry+in+translation PDF link annotation
    • http://vipadminler.org/international_royal_mail_tracking_number891p5.pdfIn PDF document text
    • https://xunasumip.weebly.com/uploads/1/3/2/6/132696393/2789703.pdfIn PDF document text
    • https://dugizixenopiloj.weebly.com/uploads/1/3/4/4/134457585/69f374a8eb4.pdfIn PDF document text
    • http://igbusinessabouthelp.com/acer_chromebook_15_at_walmart3lk40.pdfIn PDF document text
    • https://sezibuginodeso.weebly.com/uploads/1/3/4/4/134470526/fomivu_wudibaniduj_rimonogur.pdfIn PDF document text
    • https://tijesefufejeje.weebly.com/uploads/1/3/4/8/134858706/90d587342afc2.pdfIn PDF document text
    • https://vovaderinikuxu.weebly.com/uploads/1/3/4/5/134528816/kewivafunumedit.pdfIn PDF document text
    • http://feelslike35.com/zakemivanononexavmhb3.pdfIn PDF document text
    • http://nicepics.xyz/fabijutubuwealq.pdfIn PDF document text
    • https://topirameji.weebly.com/uploads/1/3/2/6/132682330/2531846.pdfIn PDF document text
    • https://fuvexowigirupog.weebly.com/uploads/1/3/4/8/134896800/764580.pdfIn PDF document text
    • https://bodarisijusafu.weebly.com/uploads/1/3/5/3/135383154/saboto_voxoxulabatu_badibejumafume_tifejogukumi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0dd1a5d-61dd-49f5-bc26-efbb06cf6436/lg_wireless_headphones_pairing.pdfIn PDF document text
    • http://perorudo.epizy.com/36308027267.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b8c0d0d-6412-466b-9d43-61af2189f115/79630787172.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15a084a9-5419-44f3-89b3-2139d980f54d/asus_tm-ac1900_aimesh.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/689076e4-98d4-408a-a261-0bf236edd3b1/52544694497.pdfIn PDF document text
    • http://jemukibupafezov.rf.gd/97066784259.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82488a68-2b7e-45f2-9248-23e0e64e5a27/computer_system_validation_jobs_in_pune.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de94c07f-e27c-4832-b808-b0adf9febf4e/how_to_attach_wing_attachment_on_total_gym.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/209ee23a-de56-48ca-8a92-bab573d4ef01/fantastic_beasts_and_where_to_find_them_2_streaming.pdfIn PDF document text
    • http://radawewivilu.epizy.com/kavot.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_off000213bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x213BC 5644 bytes
SHA-256: 03027e5d59a69cbbbc1f63abc9f17294098c7fbd54ad845420ce04b7b475d84e
font_01_sfnt_off000226c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x226C3 10664 bytes
SHA-256: 10853146d03cb39944185ce7052839883d58750dadad4005cd1a455e61ca8b5f

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