Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bea2d112a14fb1c…

MALICIOUS

PDF

80.8 KB Created: 2021-02-28 03:29:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 90bca8029073fe57d181a9820d467a29 SHA-1: 77ceb3084cec6fc18d4cb6367eaaaa98cf9c4ac6 SHA-256: 6bea2d112a14fb1ce6befe58baa57bd115e3810e4764b26de4525b7d1893e524
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as a link farm and by ClamAV as a phishing trojan. It contains numerous embedded URLs pointing to external sites, suggesting an attempt to redirect users to malicious content or phishing pages. The presence of a URL with a 'utm_term' parameter indicates a potential phishing or SEO spam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/strik?utm_term=batman+death+in+the+family+pelicula+completa+cuevana+2 PDF link annotation
    • https://faniruwesil.weebly.com/uploads/1/3/5/9/135993686/pifamevifoxiwugo.pdfIn PDF document text
    • https://pakilimog.weebly.com/uploads/1/3/4/3/134363837/mebatiziji-fazugiguferixug-wenilebi.pdfIn PDF document text
    • https://najatiruz.weebly.com/uploads/1/3/0/7/130738831/xeziz.pdfIn PDF document text
    • https://jividakole.weebly.com/uploads/1/3/6/0/136090299/3950790.pdfIn PDF document text
    • https://tadarumoroje.weebly.com/uploads/1/3/4/7/134724086/wupefa.pdfIn PDF document text
    • https://naxizugopigonav.weebly.com/uploads/1/3/1/4/131408516/kidujukawuja.pdfIn PDF document text
    • https://zerimesatevig.weebly.com/uploads/1/3/4/8/134879836/zanikimav.pdfIn PDF document text
    • https://kidamevu.weebly.com/uploads/1/3/1/4/131437276/293618.pdfIn PDF document text
    • https://nakotugobal.weebly.com/uploads/1/3/5/3/135300729/widutiritela.pdfIn PDF document text
    • https://wojopegoguw.weebly.com/uploads/1/3/4/6/134690206/gilifokopesu.pdfIn PDF document text
    • http://dithetsen.xyz/673839310797iiyx.pdfIn PDF document text
    • https://gozibaduvixumu.weebly.com/uploads/1/3/4/6/134628844/fokubezodijitemevut.pdfIn PDF document text
    • https://lusenivusimutom.weebly.com/uploads/1/3/4/8/134887898/gupisovedise.pdfIn PDF document text
    • https://kuvixirizu.weebly.com/uploads/1/3/0/7/130739951/semawi_jojepag_pumawefowo_dozalozavodad.pdfIn PDF document text
    • https://vebipebetas.weebly.com/uploads/1/3/4/0/134012388/xufudetixite.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ccbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCBD 4100 bytes
SHA-256: 863e31651e038c3abe1793c7b192bf25b5411a2d3f507db05adbdfc40c58be01
font_01_sfnt_off0000db10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB10 5348 bytes
SHA-256: b6e0ba3ce21743bed6bf561cb5f29856c3c4d0069d4904b8559a82898a5fc017
font_02_sfnt_off0000ed1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED1F 10376 bytes
SHA-256: 14730ff6313eb63756423029ad4f240b86f3ac2878abeedcfde7abb58a1cf97f
font_03_sfnt_off000110d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110D7 16036 bytes
SHA-256: 9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940
font_04_sfnt_off00012540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12540 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333