Malicious PDF — malware analysis report

Static analysis result for SHA-256 1170f2c71f5771ca…

MALICIOUS

PDF

71.2 KB Created: 2021-03-04 01:23:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4d3291d4bd3410046ab1675f8f36c74b SHA-1: 99ffba9c5850332f7e2921d81a136b1e2fbf2aec SHA-256: 1170f2c71f5771caa7d38f7683de9701bddd0e26bb28148532882d82b298937f
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://zajinet.ru/strik?utm_term=can+guys+get+diastasis+recti PDF link annotation
    • https://tizojutatow.weebly.com/uploads/1/3/1/4/131406606/4666121.pdfIn PDF document text
    • http://cybety.xyz/what_time_does_the_sun_completely_go_downl6nfo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378160/normal_5fcdd1f92092b.pdfIn PDF document text
    • https://xanowiporak.weebly.com/uploads/1/3/0/8/130814060/4631258.pdfIn PDF document text
    • https://motodamoz.weebly.com/uploads/1/3/1/4/131452818/koder_duvuten.pdfIn PDF document text
    • https://raromimuzu.weebly.com/uploads/1/3/0/8/130874361/tosebij.pdfIn PDF document text
    • https://rokosogamutoluf.weebly.com/uploads/1/3/0/8/130873735/dbd9589a15fb5a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467571/normal_60344ce126ff5.pdfIn PDF document text
    • http://bodurum.iblogger.org/pibupe.pdfIn PDF document text
    • http://fasabaf.22web.org/melunopag.pdfIn PDF document text
    • http://lusoxebi.iblogger.org/stem_cell_reviews_and_reports_bioxbio.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vogojitipam.epizy.com/bajrangbali_ka_photo.pdfIn PDF document text
    • http://xivavop.rf.gd/afterlight_mod_apk_revdl.pdfIn PDF document text
    • http://jawikaginixuxuz.rf.gd/uniform_circular_motion_activity_answer_key.pdfIn PDF document text
    • http://vevojadiren.epizy.com/13613570921.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_off0000db09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB09 5084 bytes
SHA-256: c6dbeccb032adf2c40e971c55b1abc1ccd6f8b2f35acc605f6a7d6f33bab0e22
font_01_sfnt_off0000ec68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC68 10496 bytes
SHA-256: 843f1a20e04cc0eb52cf69fec0ffbb3936974037b699d6184408bdd7ba5bccb2