Malicious PDF — malware analysis report

Static analysis result for SHA-256 06c4f63c2c0abf24…

MALICIOUS

PDF

84.2 KB Created: 2021-03-17 01:30:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: d1bde04f7984b21b28f0d6f969dbdaf5 SHA-1: 00bf897e124517744d4f278b8f4cba8c02035892 SHA-256: 06c4f63c2c0abf24e18ab71d1f7a5b0e148c4bfa420d4d578b905733c60ba3ed
246 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics identified it as a credential phishing lure impersonating Apple, directing users to a link hosted on weebly.com. The document also contains a large number of external links, suggesting it may be part of a link farm designed to distribute malicious content or for SEO manipulation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://retetozatinum.weebly.com/uploads/1/3/0/7/130775023/dapovitenezugabeni.pdf.
  • 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://ponafet.ru/strik?utm_term=skyrim+do+alchemy+ingredients+respawn PDF link annotation
    • https://retetozatinum.weebly.com/uploads/1/3/0/7/130775023/dapovitenezugabeni.pdfIn PDF document text
    • http://arnautmebel.ru/62970319396k0ctk.pdfIn PDF document text
    • https://monijakuxit.weebly.com/uploads/1/3/4/3/134362478/jofebivaw-xotorapomiku-sokawive.pdfIn PDF document text
    • http://gewarum.66ghz.com/colorfy_apk_full_unlocked_free.pdfIn PDF document text
    • https://xekesaxi.weebly.com/uploads/1/3/4/3/134317917/bumabotikagefevezoju.pdfIn PDF document text
    • https://rudabukonavapuk.weebly.com/uploads/1/3/4/0/134016662/fb65530428a4f.pdfIn PDF document text
    • http://fartook.online/86615396520lx1oy.pdfIn PDF document text
    • http://bossyonlinex.com/how_to_write_a_gcse_literature_essay90mdv.pdfIn PDF document text
    • http://topcreditmonitoring.info/sony_ericsson_mw600_battery_changeebybk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424364/normal_60225c3733050.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374537/normal_5fff57da1aca8.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://uploads.strikinglycdn.com/files/454a5d45-0cf5-4f15-930f-48b353f036a0/garmin_vivofit_jr_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdd32fd8-75da-4061-b681-7a0b446dcede/mr_smith_goes_to_washington_questions_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/yonder_switch_guide.pdfIn PDF document text
    • http://jabisuluro.epizy.com/69297480787.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd496023-1263-4c68-86eb-6ff2f89c8eab/69710815031.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d8f1066-4704-4821-af73-1144e99d80c6/37346634116.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/17337312348.pdfIn PDF document text
    • http://wesozavo.epizy.com/vavixojisiximaxasipano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ff98e59-343d-4ebc-a855-4d31ec739bd2/dotisunuxivefaki.pdfIn PDF document text
    • http://pomuvoxibi.epizy.com/how_to_develop_key_informant_interview_questions.pdfIn PDF document text
    • http://rozizujis.epizy.com/read_the_chemist_by_stephenie_meyer_online_free.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_off0000fafa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAFA 5636 bytes
SHA-256: 48cb8f189031fdbeef9da7292f9510aba38180cd3d3cf184da06b47cc30ebb62
font_01_sfnt_off00010e0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E0C 11460 bytes
SHA-256: bdf0f1f696116a9925961509a4dbadb4882ca57f2216e6efb333bf2c5d907edc
font_02_sfnt_off00013525.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13525 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176