Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b122b00a383b67c…

MALICIOUS

PDF

75.4 KB Created: 2021-02-22 23:37:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f864781bb82068fd9f16889fcce080bf SHA-1: 0cf73ab2bc2095289c6e4645ff1c69e0cb66cdd1 SHA-256: 1b122b00a383b67c64680239f64202dddea8bc7a7d3fb42635c5c501f11ff43d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/wix?keyword=sound+striker+bard PDF link annotation
    • https://pexififowuru.weebly.com/uploads/1/3/4/7/134714045/wimavevif.pdfIn PDF document text
    • https://wejobufobugof.weebly.com/uploads/1/3/5/3/135348322/222656.pdfIn PDF document text
    • http://faceit.su/pk_tC3BCrkC3A7e_dublaj_indir_1080pp48v4.pdfIn PDF document text
    • https://puwulafu.weebly.com/uploads/1/3/5/3/135329465/sukinemif.pdfIn PDF document text
    • http://mixed-rootwork.com/11181916630uu4t0.pdfIn PDF document text
    • https://tekevifumufov.weebly.com/uploads/1/3/0/7/130739519/21ea3b0b.pdfIn PDF document text
    • https://dofipoxadule.weebly.com/uploads/1/3/4/3/134314370/tilesevin-nexumo-xozelebu.pdfIn PDF document text
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/belilivifoxabidini.pdfIn PDF document text
    • https://gabejudunutulan.weebly.com/uploads/1/3/4/8/134887900/tovigikijoju.pdfIn PDF document text
    • https://zevigetadafuwun.weebly.com/uploads/1/3/0/9/130969942/fodusolebelug_wipedinar_poburefezasa.pdfIn PDF document text
    • http://wokelegekak.66ghz.com/wojodizamurimivuvakala.pdfIn PDF document text
    • http://fakts.design/barsaat_old_film_songskxvdt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mogovotodokat.rf.gd/85716364576.pdfIn PDF document text
    • http://sewasijibakel.epizy.com/mevona.pdfIn PDF document text
    • http://sisawujeza.rf.gd/turkiye_burslari_scholarship_2019_application_form.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_off0000e86e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE86E 5096 bytes
SHA-256: 162736a9d85685149f409917fc078c19ecb2dff19dd90ccea041a6712ae277cc
font_01_sfnt_off0000f9c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C9 12128 bytes
SHA-256: 388e6e6ce7749139c56b8ca82198f3354ac6214c218f26952e83b0b941b58b1f