Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2bc1b5c28288228…

MALICIOUS

PDF

65.8 KB Created: 2021-03-24 15:17:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0d7306597900b6cc248b8c36d3ee6999 SHA-1: ddf3397060db3df91e5da5f5c5e1ed0334b8f454 SHA-256: a2bc1b5c28288228a8d4b8367b66a9cf7186142c9539c5000ee26d6d3c68bce2
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-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://jottigo.ru/strik?utm_term=maze+runner+the+death+cure+trailer+music PDF link annotation
    • http://baltika-trans.com/86736385937pdwo.pdfIn PDF document text
    • https://cdn.sqhk.co/reromiwo/gjiji5d/frosty_mountain_ice_cream_menu.pdfIn PDF document text
    • https://cdn.sqhk.co/burajugi/0jb3wwS/83307238722.pdfIn PDF document text
    • http://laxofetiduwi.iblogger.org/14188793567.pdfIn PDF document text
    • https://cdn.sqhk.co/jixuvepabu/ifesKEn/59386822170.pdfIn PDF document text
    • http://zexaribamemavi.sportsontheweb.net/lenovo_thinkpad_t430_i5_16gb_ram.pdfIn PDF document text
    • https://cdn.sqhk.co/nezupusovefi/ChcC4Y7/bomber_friends_apk_mod_money.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wojodiguf.rf.gd/dunkin_donuts_hot_coffee_sizes_ounces.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8159cad9-34b4-478a-ba51-6dea69b3a722/66230323876.pdfIn PDF document text
    • http://suduxegowur.onlinewebshop.net/business_intelligence_guidebook_rick_sherman_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5e15e3e-90d6-4836-8d71-524d06901b57/38628016328.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da5b0b68-bcd7-4942-9058-e398998e6179/what_do_you_need_to_do_to_become_a_secret_service_agent.pdfIn PDF document text
    • http://dogazuzi.epizy.com/61546664129.pdfIn PDF document text
    • http://gamemogap.epizy.com/are_the_darth_bane_books_canon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ddbf62f-d915-490d-ac89-2f54dced6133/hoover_floormate_deluxe_hard_floor_cleaner_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76aa1143-8955-45c7-9610-c424c39cdc57/whirlpool_dishwasher_quiet_partner_parts.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_off0000c4e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4E8 5232 bytes
SHA-256: 6b3ec9b0f4c491c53382d1a9a4bf286cd971d459435735190e31f2b75770a3dc
font_01_sfnt_off0000d69f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD69F 10476 bytes
SHA-256: d1a1e55fa2755d11db2e0063c1fb95c2eb0c5922e2aebf4e555959979a6c0afd

Open this report in the interactive analyzer, or submit your own file for analysis.