Malicious PDF — malware analysis report

Static analysis result for SHA-256 212e29c615e5ec43…

MALICIOUS

PDF

80.4 KB Created: 2021-02-08 05:04:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: a2dd9c6893ffafff91d0ebcc7a3d7c19 SHA-1: 50acb8e0df83b02e7b3d0bd61b015e6dffb9d962 SHA-256: 212e29c615e5ec433def020f352c406a71668224605386b97ca3f1d0310b7ffa
186 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, contains keywords related to movie downloads, likely serving as a lure. The presence of PDF_SEO_LINK_FARM and PDF_SEO_DISPOSABLE_LINK_FARM heuristics, along with ClamAV and ML detections, strongly indicates malicious intent, likely to redirect users to malicious sites for further exploitation or credential harvesting.

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://jottigo.ru/wb?keyword=badrinath%20telugu%20movie%20tamil%20dubbed PDF link annotation
    • https://zosupexaduj.weebly.com/uploads/1/3/0/7/130738593/7427949ec3.pdfIn PDF document text
    • https://fezivalolir.weebly.com/uploads/1/3/4/4/134461714/figudufoveb.pdfIn PDF document text
    • https://viwefinorix.weebly.com/uploads/1/3/0/8/130813514/banimabo.pdfIn PDF document text
    • https://pipabujul.weebly.com/uploads/1/3/2/6/132680817/8200772.pdfIn PDF document text
    • https://sazopugewado.weebly.com/uploads/1/3/1/4/131453094/magodifev.pdfIn PDF document text
    • https://merebidoso.weebly.com/uploads/1/3/4/3/134344951/vosejarikawagomuxi.pdfIn PDF document text
    • https://murarukaxew.weebly.com/uploads/1/3/4/6/134666391/sugubulutakakokope.pdfIn PDF document text
    • https://vemubofopelo.weebly.com/uploads/1/3/0/7/130776521/jekenigegaja_limivalesikaxut_feluzu.pdfIn PDF document text
    • https://sujarusokebukok.weebly.com/uploads/1/3/1/4/131437349/sakure-wibotaxoli-zoragemuvisopig-siguxafimifa.pdfIn PDF document text
    • https://jagotizepevex.weebly.com/uploads/1/3/4/4/134464701/3084e05.pdfIn PDF document text
    • https://latopilufazi.weebly.com/uploads/1/3/4/0/134017217/678732c67ad3.pdfIn PDF document text
    • https://wejuwano.weebly.com/uploads/1/3/1/1/131163718/jezuvot_rezozubes.pdfIn PDF document text
    • https://losuwasujiro.weebly.com/uploads/1/3/1/6/131637226/b86b043ee75793c.pdfIn PDF document text
    • https://jizoneva.weebly.com/uploads/1/3/0/7/130738725/kejomubexalaw_wabazaweg_legebafejatota.pdfIn PDF document text
    • https://rajexomogalifi.weebly.com/uploads/1/3/4/8/134891851/3751189.pdfIn PDF document text
    • https://kesoxebexug.weebly.com/uploads/1/3/2/6/132681937/ruxuv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f2ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2AC 5308 bytes
SHA-256: e4be2603285ff9e3d82e6a0ff1ec19a1a4300741f1a4257c6a804c25d37e450b
font_01_sfnt_off00010499.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10499 15492 bytes
SHA-256: b86645188ba808e0080f808c52433e2154396f2a918133410769e75e0f471de7

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