Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6a8eee6ebe00e2c…

MALICIOUS

PDF

78.2 KB Created: 2021-06-05 14:17:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 82fbf89704aba18f095fb6ca18dcaa6e SHA-1: 95f84f9d3eaca8f59678789cead9eebaeab103cd SHA-256: a6a8eee6ebe00e2c6736373bfe8031f1e4d8c80cf279e297a23d2dd27ca9c69d
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a significant number pointing to disposable hosting and exhibiting characteristics of a link farm. The presence of the URL 'https://inwebjor.ru/pbw?utm_term=pmdg+livery+manager+777' suggests a potential phishing or malicious redirection attempt. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious intent to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://inwebjor.ru/pbw?utm_term=pmdg+livery+manager+777 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4387577/normal_5ff5a30366fdf.pdfIn PDF document text
    • https://gixoxiri.weebly.com/uploads/1/3/4/7/134707295/fowulegi-levaze.pdfIn PDF document text
    • https://nopifabuda.weebly.com/uploads/1/3/4/6/134693299/9c7f26.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476577/normal_60047a561e23a.pdfIn PDF document text
    • https://xetibipu.weebly.com/uploads/1/3/4/5/134528590/jovodar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408582/normal_601012189be72.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378386/normal_600296d32351b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365998/normal_6068222fa46ad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376602/normal_5ff381b587718.pdfIn PDF document text
    • https://befadileniralan.weebly.com/uploads/1/3/6/0/136082268/8497038.pdfIn PDF document text
    • https://romizipomubem.weebly.com/uploads/1/3/0/7/130775952/guruwofalal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416495/normal_6045f511239f4.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4490252/normal_60b42012f0c2a.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/9db2ba39-68b5-43a0-bc9d-fb6caacead60/what_do_radioactive_elements_decay_into.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c85b450-f0a8-4960-b52e-5aaf38d18f94/acer_aspire_e15_battery_reset_button.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8a1a107-f09f-403c-9d9e-1199cf89ee7d/goxazedimagux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb3a3a4f-7645-4eb0-b36b-a704136a3b24/ruvebutej.pdfIn PDF document text
    • http://redejok.pbworks.com/w/file/fetch/144520443/diferencia_entre_fonetica_y_fonologia_en_ingles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60f896fa-6955-4edf-8ac4-a43a11cb281e/84915155126.pdfIn PDF document text
    • http://bokibagaror.pbworks.com/w/file/fetch/144655701/american_academy_of_neurology_criteria_for_brain_death.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f0c53d8-035a-4b02-8af7-ab13f09bf7ad/gekowudexes.pdfIn PDF document text
    • http://sofutikajen.pbworks.com/f/dieta_cetognica_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5bc3b34-56f9-497d-bda7-ffbc66a1b92d/murebuzi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/602ecc50-330c-448c-860f-2244bc45a87c/xulugi.pdfIn PDF document text
    • http://lufokomarib.pbworks.com/f/alphabet_handwriting_practice.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34847115-928f-4ed4-b269-c3f774185d07/lg_d415_unlock_code_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3fa3576-9cf4-4252-8b38-9567bd698c3c/resomakisunumapi.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_off0000f395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF395 5208 bytes
SHA-256: ae4e8c330e6146a4490378714730f79eb7c9959e3e2aa5d0841a75c300e5d95f
font_01_sfnt_off00010548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10548 11196 bytes
SHA-256: a0962a348a3483725c64f66bba76d0fa2e8319476a03daa9f2e6fc9fdf7d1a50

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