Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c4a7a179dc60705…

MALICIOUS

PDF

168.7 KB Created: 2020-11-12 18:47:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8741573973dd035a944e22fc893bb8bc SHA-1: 06d37fde73b19f1b5e840e31da0d8becf2370a98 SHA-256: 2c4a7a179dc6070506b32e60ce37342bd98989ce852c15eed354ee61386b4252
126 Risk Score

Malware Insights

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

The PDF contains embedded URLs and is flagged by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly indicates maliciousness. The document body, though heavily obfuscated, appears to be a lure related to 'History of caliphate in islam pdf', directing users to a suspicious URL on traffnew.ru. This suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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 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://traffnew.ru/aws?utm_term=history+of+caliphate+in+islam+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383450/normal_5f938dcc36b6e.pdfIn PDF document text
    • https://nabolonoroxene.weebly.com/uploads/1/3/4/3/134373159/jugoli.pdfIn PDF document text
    • https://gemenudotipetal.weebly.com/uploads/1/3/2/6/132695720/8c5bff6809a.pdfIn PDF document text
    • https://bakigimos.weebly.com/uploads/1/3/4/3/134322269/luzeju_resatufiposuxe_voxaxetaralu_nijapukebux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382407/normal_5f8f2ab612f5d.pdfIn PDF document text
    • https://kepamimap.weebly.com/uploads/1/3/4/6/134609022/fc3a6224751911f.pdfIn PDF document text
    • https://mepafuxutare.weebly.com/uploads/1/3/4/6/134660934/gosifigodasawi-dizowuxu-dazorodeviv-bulapivuzuwile.pdfIn PDF document text
    • https://kitovipafabezed.weebly.com/uploads/1/3/4/6/134600887/1658937.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a66f6454-303b-42ea-94f5-d1f1488c0604/usa_map_quiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b5de69d-7bf8-4172-ad72-eed9f3d5b435/45732113894.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1aacf8e7-0720-47aa-9efe-d3e8a9e9b5fe/brennan_high_school_colors.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13664036-0603-4b64-946f-a90c2f9b29c2/la_quinta_high_school_la_quinta_ca_website.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off00027712.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x27712 18492 bytes
SHA-256: 35e777f85af3985e5b2e57ffeded023ad3c5a9c0648664666bdd4a9a2fb5549d
font_00_sfnt_off00022bd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22BD7 3028 bytes
SHA-256: b325b9119ac712d293a00f9f3c43393024581babe11375bb6430b01a0729824f
font_01_sfnt_off000236b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x236B2 5456 bytes
SHA-256: 1bd7d5397d3b0e2ce5f644f26aaa87d6fde8638cfd68f4f73d43b933461529c1
font_02_sfnt_off0002491c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2491C 15632 bytes
SHA-256: 2e8d204bdcbaf1638b96f534b953a5ba29198562767dde1008979d13339eab18

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