Malicious PDF — malware analysis report

Static analysis result for SHA-256 207ff230ccf338e2…

MALICIOUS

PDF

72.0 KB Created: 2021-04-01 09:29:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 2bc1dd315d79e70a18ef5b1c519e76df SHA-1: 9d0451f47d48298dfc27cd6756a3f64300971554 SHA-256: 207ff230ccf338e243ae7a4274dbf19d4e084c6879fbd296f5bf875578f338dc
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 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/strik?utm_term=proctor+silex+slow+cooker+durable+3+quart+capacity PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451227/normal_5fd2d3f321bf5.pdfIn PDF document text
    • https://memetunariva.weebly.com/uploads/1/3/1/4/131454345/a570ed1d871cc40.pdfIn PDF document text
    • https://cdn.sqhk.co/kutajanode/hjmgjoi/95916717061.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495974/normal_602be70c8b536.pdfIn PDF document text
    • https://vakugisup.weebly.com/uploads/1/3/0/7/130739558/1abfd600d2f2.pdfIn PDF document text
    • https://rakevuxex.weebly.com/uploads/1/3/4/0/134040666/fb2767f311aaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413703/normal_60102ec431aa6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369161/normal_5fc699fd32de8.pdfIn PDF document text
    • https://cdn.sqhk.co/fumamimed/bXifA7l/xajugipogusijuzovemo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500425/normal_5ff255f230298.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446270/normal_601d6fe0e997d.pdfIn PDF document text
    • https://xuzonikafu.weebly.com/uploads/1/3/5/3/135351414/5096036.pdfIn PDF document text
    • https://volokosebu.weebly.com/uploads/1/3/4/8/134871595/gasejuguxeloxa-lotupizeve-nagux.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/kagedatabujo/vodoke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94bade38-3030-4e17-946d-de96e814aba5/36899358438.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/chapter_17_organizing_life_s_diversity_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0b3cea0-7abb-40e0-94b0-383c36a621f1/how_do_i_pay_my_credit_one_bill_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b916064-4b2b-4823-804e-697738e9a5f6/asus_xonar_dgx_5.1_vs_creative_sound_blaster_audigy_fx.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49c0f2bf-a142-49d8-9579-98fe7ec6679c/craig_bluetooth_tower_speaker_pairing.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/acer_aspire_switch_10_windows_10_clean_install.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed33a0a0-95d7-4da8-8009-aa61015f928f/square_d_200_amp_transfer_switch.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_off0000d936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD936 5824 bytes
SHA-256: 9876505d766ffce8f8c389055c8881f62d265090ad42dbea98615aac337d913f
font_01_sfnt_off0000ed30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED30 10788 bytes
SHA-256: 1126b613afe35d1d9faa598117ae7a680f811cb666dbc07e1e849d7dd6cda5ef

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