Malicious PDF — malware analysis report

Static analysis result for SHA-256 2729bf22e0759542…

MALICIOUS

PDF

119.4 KB Created: 2021-03-23 20:02:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 439be90b9963f1ea9add342f57821912 SHA-1: f2c6efef9dae2fc9ae5ea2d20b328f2f36ed9e05 SHA-256: 2729bf22e075954244e514b9d33336386f4159ea14bc68e2449a7eec4f91f468
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous external URLs pointing to various domains, many of which are hosted on disposable platforms like Weebly and sqhk.co. The primary purpose appears to be directing users to potentially malicious or phishing sites, as suggested by the 'PDF_SEO_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • 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.
  • 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://soxebez.ru/award?keyword=behaviorism+theory+by+skinner+pdf PDF link annotation
    • https://gajifawegux.weebly.com/uploads/1/3/4/6/134649352/gajevulozi.pdfIn PDF document text
    • https://sizelelam.weebly.com/uploads/1/3/4/8/134867910/bejogeliluraz.pdfIn PDF document text
    • https://cdn.sqhk.co/fijajiles/Licicha/moweb.pdfIn PDF document text
    • https://cdn.sqhk.co/tawakejolap/ZAfjRih/losugogufuperufamababuz.pdfIn PDF document text
    • https://cdn.sqhk.co/wipedekis/Fhahdgf/lighthouse_insurance_login.pdfIn PDF document text
    • https://ruwalabipuges.weebly.com/uploads/1/3/4/4/134465281/lirexun.pdfIn PDF document text
    • https://cdn.sqhk.co/vamunidibu/giYhhe3/spaceballs_yogurt_merchandising.pdfIn PDF document text
    • http://naturwow.space/74415352269v91oa.pdfIn PDF document text
    • https://cdn.sqhk.co/pogadidotilu/iehcnjb/battery_tender_jr_instructions.pdfIn PDF document text
    • https://berebexamoleti.weebly.com/uploads/1/3/1/3/131384136/45a8cc499.pdfIn PDF document text
    • http://bcipreactivaperu.com/ka_mun_rahrrh56.pdfIn PDF document text
    • https://cdn.sqhk.co/fepixuzutol/hgi4ijt/vogalinomozenogoguxi.pdfIn PDF document text
    • https://fanamavikere.weebly.com/uploads/1/3/4/6/134610997/719f66867f.pdfIn PDF document text
    • https://cdn.sqhk.co/jasamomedam/id0q8id/ratowinusojibixedexavafup.pdfIn PDF document text
    • http://forecast.bet/apple_music_beta_3._0_apklip2f.pdfIn PDF document text
    • https://cdn.sqhk.co/bupabumo/7LjfLjj/voxevarivafu.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/97f04aff-c956-469f-a81e-6ef3c2d4be73/international_power_electronics_and_motion_control_conference_pemc.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/button_loading_android_studio.pdfIn PDF document text
    • https://s3.amazonaws.com/wovedukevikov/top_social_media_platforms_for_business_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf98e051-538f-465e-8f7b-2a6525616884/sharepoint_2013_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/escape_room_game_level_19_answer.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_off00019765.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19765 5664 bytes
SHA-256: c974368a3d1aa0483b998305c468a2841ab512bb5599093736c8ae5940d62465
font_01_sfnt_off0001aa8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AA8E 11000 bytes
SHA-256: a7483992a58421a42d50ac20a9ae3618b471c28934b6f2139bf3593db71b7db8

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