Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc01bb171065d19a…

MALICIOUS

PDF

73.6 KB Created: 2021-01-27 05:18:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: f20db5f28f42fd4e8ae77090ad89496d SHA-1: ed487d41d4347693e1339795fcc01ce000ee683c SHA-256: fc01bb171065d19a7656986562ccbf9d7705fd5ebc7d053db41bfee94b87b248
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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/shook?utm_term=cruise+ship+companies+in+usa In PDF document text
    • https://cdn.sqhk.co/zijikunu/giS1FdF/gudawawodeludixofuj.pdfIn PDF document text
    • https://takigufumugo.weebly.com/uploads/1/3/5/3/135345847/vizesomanejesi-werokowemitas-gedilijak-sonigadu.pdfIn PDF document text
    • http://plsale.pro/acrylic_nails_designs_black_and_gold43z98.pdfIn PDF document text
    • http://drive4mclanemilwaukee.com/21349469558b72ji.pdfIn PDF document text
    • https://ruwatija.weebly.com/uploads/1/3/4/8/134846771/476d0f761.pdfIn PDF document text
    • https://nepuvojikonutoz.weebly.com/uploads/1/3/4/6/134677469/viwakajum_kogifowez.pdfIn PDF document text
    • https://cdn.sqhk.co/jifigetuxu/bOhdbND/art_wallpaper_hd.pdfIn PDF document text
    • http://lasleymarkt.ru/70513562674ffq0h.pdfIn PDF document text
    • https://cdn.sqhk.co/sirepajaku/jaiahc0/69686750576.pdfIn PDF document text
    • http://simkosa.website/tusevifovisedimaxato7dkh.pdfIn PDF document text
    • https://sotasoniwolog.weebly.com/uploads/1/3/1/6/131637806/4440683.pdfIn PDF document text
    • https://bodumiwi.weebly.com/uploads/1/3/1/4/131406735/6576954.pdfIn PDF document text
    • http://malespw.xyz/70905430087fc0vz.pdfIn PDF document text
    • http://geesecam.com/puxofetitolabifocm571.pdfIn PDF document text
    • https://dawopodesolapip.weebly.com/uploads/1/3/5/3/135327749/fuzerapivazevab_kepuzal_xegujegugata.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/piwupevivotixi/witojizunazizol.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/japan_guide_jr_pass.pdfIn PDF document text
    • https://s3.amazonaws.com/jazamerijekufol/fikew.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_off0000e30f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE30F 5048 bytes
SHA-256: 35a2517e7dd69cfbcc20fd79a93b3bd7d7ec221198a7ca6d0244ad377325cc8b
font_01_sfnt_off0000f407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF407 11004 bytes
SHA-256: 3d2d60a7a0d692d139df70024375365aba662cbe347e7e9eaf8439ac8b3b0179

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