Malicious PDF — malware analysis report

Static analysis result for SHA-256 076391fa70a3fca9…

MALICIOUS

PDF

100.5 KB Created: 2021-06-05 22:13:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 96d476cacfb24074f090679e31a3bf5f SHA-1: 943ad5d5919a40f0a37158f9a84bbdacc41a7b5a SHA-256: 076391fa70a3fca9a919007e5689de9b7647d716418a97514a867dd15ad40ab5
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 contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or SEO spam operation. The primary URL, https://philabc.ru/pbw?utm_term=weber+genesis+ii+e-210+vs+spirit+e-310, is likely part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://philabc.ru/pbw?utm_term=weber+genesis+ii+e-210+vs+spirit+e-310 PDF link annotation
    • https://bipixexomalexu.weebly.com/uploads/1/3/4/3/134349320/xetugifegemoju.pdfIn PDF document text
    • https://dajidavibaral.weebly.com/uploads/1/3/4/6/134606929/lefutoweviwerun_vufoximarugafo.pdfIn PDF document text
    • https://movojedafep.weebly.com/uploads/1/3/0/8/130814843/jenovumepinix.pdfIn PDF document text
    • https://nukanepinax.weebly.com/uploads/1/3/1/4/131454046/873d08eddcbc.pdfIn PDF document text
    • https://nigefawami.weebly.com/uploads/1/3/4/5/134598638/tijuti.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
    • http://lugozamuxika.pbworks.com/f/37205160018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c59a1ef-8db1-4983-9c35-a07e012d57ce/what_do_you_mean_by_metamerism.pdfIn PDF document text
    • http://botinuba.pbworks.com/f/how_to_install_ipa_files_on_iphone_no_jailbreak_no_computer.pdfIn PDF document text
    • http://wenitat.pbworks.com/w/file/fetch/144551829/10701810620.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab3d8f44-7ce4-420f-99be-0e043182956f/how_to_tell_if_your_dog_is_in_rem_sleep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e24840e3-c217-44e5-8ba5-dfeecd8092d8/how_to_setup_logitech_k400_plus_keyboard.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/388b5324-5b75-44f2-ac74-3da6d27c0b4b/whirlpool_gold_series_side_by_side_refrigerator_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/515df104-5b25-420c-865f-081ee1c8a440/how_to_make_a_police_report_in_houston_tx.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7bfa5a9-0bf0-4279-98a4-10de1864d85c/21057575199.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d672fc6-9c04-493d-95fe-303fe991fddd/exercice_calcul_primtre_cm1__imprimer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d95f120b-8f16-471f-b396-4b3ea8339cc1/66436471275.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abe9f156-b1f6-4d12-8232-121d94c87c20/exercises_in_real_and_complex_analysis_with_solutions_-_walter_rudin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c3669be-5d9a-44c7-a079-a97a35712243/diwovejig.pdfIn PDF document text
    • http://bofamawetodo.pbworks.com/f/39018140531.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f54b5237-5eba-4ae7-83fd-1af6151ad81b/6.0_powerstroke_turbo_bolt_size.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6c97ea7-a1bc-422a-ab8c-0c37ed15dc60/pevit.pdfIn PDF document text
    • http://bovojigu.pbworks.com/w/file/fetch/144424677/69586489030.pdfIn PDF document text
    • http://faxamom.pbworks.com/w/file/fetch/144602028/zevewoleto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba479b24-25b6-4b2d-a6cc-d66feb8212df/tax_free_wealth_amazon.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_off00013fcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FCB 5160 bytes
SHA-256: eb3fb3d0deee043ae14f77d689fb7a00f4e6d0b80d61eee93d98d2fbcb977160
font_01_sfnt_off00015181.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15181 11172 bytes
SHA-256: 7cd5c88526162f1ab861ee47637c18c2f4eac6848969aeba43b476fb1a3b789f
font_02_sfnt_off0001765a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1765A 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34