Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e161c7d4553b791…

MALICIOUS

PDF

46.2 KB Created: 2020-10-26 06:41:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 4139917e9438ca1f999dda5c60aa2906 SHA-1: 701a150247e0c922a5d1f2a477e63ad11fa789c5 SHA-256: 2e161c7d4553b79121922e538220213d26bc3125f6c6818cb5683ad41af61e6f
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://cctraff.ru/aws?keyword=aditya+birla+sun+life+mutual+fund+sip+form+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4393026/normal_5f8e86bc7fae2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388612/normal_5f9215980acff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368488/normal_5f8898f85167f.pdfIn PDF document text
    • https://rulomegujenuguv.weebly.com/uploads/1/3/4/3/134329868/2698682.pdfIn PDF document text
    • https://mepagalupotope.weebly.com/uploads/1/3/4/2/134265457/retesosi_famamavabijan_wogutokazugas_nipinuw.pdfIn PDF document text
    • https://nonudefetug.weebly.com/uploads/1/3/4/3/134314303/timifemewo.pdfIn PDF document text
    • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/8320e8e68f2fd3c.pdfIn PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/7484368.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370985/normal_5f8919c725b2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366989/normal_5f87658257cec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379032/normal_5f8bd5217a181.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413000/normal_5f948363bad90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374207/normal_5f8a88e1cb623.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385010/normal_5f90aaead95f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369150/normal_5f899750d663a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369901/normal_5f935ebdacf8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385197/normal_5f8dc6ccceb4b.pdfIn PDF document text
    • https://vafumigoku.weebly.com/uploads/1/3/1/3/131384305/76cc774d0a.pdfIn PDF document text
    • https://botubadixebom.weebly.com/uploads/1/3/1/4/131407995/9058919.pdfIn PDF document text
    • https://xufiwelak.weebly.com/uploads/1/3/1/1/131164558/maguzafivijekogivifi.pdfIn PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/3703292.pdfIn PDF document text
    • https://rowurasivove.weebly.com/uploads/1/3/4/3/134357219/tevonediwo_jowumidetodipo_juxedovelor_kevafevab.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007327.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007327.bin)
    • https://s3.amazonaws.com/pazifetanegapu/blue_eyes_song_lyrics_download.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/gozegodejewuzojoxiliwi.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/askep_neoplasma.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/42096606496.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/98115126913.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 extracted file (font_00_sfnt_off00007327.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7327 5420 bytes
SHA-256: 83cbe294bb9822086d4dac6784e8eb70e3dc488c6e2f289fc4c0eab13f5c3051
font_01_sfnt_off0000857e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x857E 10864 bytes
SHA-256: 44988869f07ea007b264f1fe18cbbc36371ca471eaa23d101be2d2e9cc823e4d