Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb85b3dc6e479975…

MALICIOUS

PDF

83.8 KB Created: 2021-03-08 17:45:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: efddf67eab3d37d6922fa9c5dadd004a SHA-1: 2032cd4db7d164c5545cbaf05b93cc7e3a229078 SHA-256: eb85b3dc6e4799756819754119eff51aaa4eb46dea560c355072ef08302ef28e
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 0.9992

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://baarspo.ru/wix?keyword=hip+hop+weekly+media+kit+2018 PDF link annotation
    • https://davanowaxisipu.weebly.com/uploads/1/3/5/3/135318110/9816586.pdfIn PDF document text
    • https://topalezomezo.weebly.com/uploads/1/3/4/3/134305389/16937b.pdfIn PDF document text
    • https://cdn.sqhk.co/nugunexinazo/RjcYT0C/playroom_decor_ideas.pdfIn PDF document text
    • http://xeeewq.xyz/33410016209tc67f.pdfIn PDF document text
    • http://prizinsta.online/fuxojifepenaku4q493.pdfIn PDF document text
    • http://xtina.online/bcs_preparation_routinep1k2p.pdfIn PDF document text
    • http://arfesopt.com/at_t_digital_life_customer_service_emailkgk7f.pdfIn PDF document text
    • http://good-production17.site/nutufepezavotupefld93.pdfIn PDF document text
    • https://tekipagitew.weebly.com/uploads/1/3/4/8/134871071/8202686.pdfIn PDF document text
    • https://cdn.sqhk.co/nopawuwam/QEPl6hf/roblox_ipo_ticker.pdfIn PDF document text
    • https://cdn.sqhk.co/kadukugobug/migjgI6/15515115145.pdfIn PDF document text
    • https://cdn.sqhk.co/volumusigu/ig1gjhf/baby_shark_1_hour.pdfIn PDF document text
    • http://expressvpn.store/the_day_of_the_jackal_full_movie_19740kdr.pdfIn PDF document text
    • http://homebig.space/what_do_you_call_a_360_degree_angle9vaf8.pdfIn PDF document text
    • https://cdn.sqhk.co/kunimanujage/jchghgv/safe_lagoon_parental_control_apk.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
    • https://s3.amazonaws.com/zulezov/mcdonald_s_big_mac_nutrition_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e605c1e-87f2-4082-a1aa-d2598fa7f8d5/1982_honda_urban_express_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/909b1c64-7e25-4791-a6ce-c4e34751e9b0/57411637637.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae334e5e-cfc3-4d1d-9b7c-266744f02a2a/livesaxipov.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/rofepabojabewa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e611c0be-98c4-4822-8871-79d831333395/what_are_the_four_basic_project_time_management_techniques.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/anis_merah_juara_nasional.pdfIn PDF document text
    • https://s3.amazonaws.com/kobivimelelo/athene_cunicularia.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fcc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC5 5348 bytes
SHA-256: 8502ce66527943eeec03e570e03eec5058a93d814a262637bffd46fd7fadd5b2
font_01_sfnt_off00010f0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F0B 10700 bytes
SHA-256: 662b85491a51b9823b91dd85a77ed4ee13edbc1bbcba1e6ff4eb9cf7f3b7fa0b
font_02_sfnt_off000133ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133AC 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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