Malicious PDF — malware analysis report

Static analysis result for SHA-256 1085eb789f76783f…

MALICIOUS

PDF

72.8 KB Created: 2021-01-25 13:46:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 53ec76b8b13ce88625ed691fee689af5 SHA-1: f3757c015492863d08668db379c019668695730d SHA-256: 1085eb789f76783f20153c75a1222a4591761edc83d3fdb0042cb338b5e49992
252 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://yafferge.ru/wb?keyword=hitman%20agent%2047%20full%20movie%20download%20300mb In PDF document text
    • https://batigagonu.weebly.com/uploads/1/3/4/7/134774980/lixibikusoxabevol.pdfIn PDF document text
    • https://wilegefozuf.weebly.com/uploads/1/3/4/3/134399327/pabejanuz_vonawoxudub_raxege_vesaf.pdfIn PDF document text
    • https://wuvozova.weebly.com/uploads/1/3/4/5/134500004/jozopekono.pdfIn PDF document text
    • https://lugumeduzox.weebly.com/uploads/1/3/0/7/130740149/657b0b2fa5b8c.pdfIn PDF document text
    • https://revugegan.weebly.com/uploads/1/3/4/6/134682990/wudulumafogur.pdfIn PDF document text
    • https://vuxilimibipemop.weebly.com/uploads/1/3/1/4/131453056/soxesefeda.pdfIn PDF document text
    • https://dadekubezaxinis.weebly.com/uploads/1/3/2/7/132740399/tadil-lomig-bewulu-pofotax.pdfIn PDF document text
    • http://sweetygirl.club/voa_persian_on_hotbirdqouoq.pdfIn PDF document text
    • https://wunogalabapa.weebly.com/uploads/1/3/4/6/134603674/niwimer.pdfIn PDF document text
    • https://lewofadexireg.weebly.com/uploads/1/3/4/8/134868993/rojirunijakum.pdfIn PDF document text
    • http://lbaranaydin.com/strikers_1945_iii_switchzri47.pdfIn PDF document text
    • https://welajewovire.weebly.com/uploads/1/3/3/9/133999455/3351377.pdfIn PDF document text
    • http://cccckkkkkdd.space/escape_horror_temple_walkthroughcmix1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/jio_chat_free_app.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/745581200.pdfIn PDF document text
    • http://kupemamenigasi.rf.gd/catalyst_9200_datasheet.pdfIn PDF document text
    • http://koxosam.rf.gd/jetarajomuvawoxugefogi.pdfIn PDF document text
    • http://surifetopene.epizy.com/kunopuwegimepe.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_off0000df10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF10 5680 bytes
SHA-256: 7f14c119928740a2522df04b293434df8c5ccef79dcca2c40cbc3873fef89969
font_01_sfnt_off0000f285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF285 10296 bytes
SHA-256: 1bf64771dc6ece914f9ba8e4f069225e368ea228aaacff58be96dd89996ca2ac