Malicious PDF — malware analysis report

Static analysis result for SHA-256 eba9d2e5e710a668…

MALICIOUS

PDF

79.5 KB Created: 2021-04-03 11:13:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 48caecd9d05a4bc332de19d57fdbbe90 SHA-1: d9a34c572a1bc6d6639e6e2260bd24e10608cd97 SHA-256: eba9d2e5e710a668e127b3fa64a7c03b6bbcfb043644b84643e7f2d7a51f00a4
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to disposable hosting and employing UTM parameters, suggesting a link farm designed to redirect users to potentially harmful sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically flags this behavior, indicating the document's primary purpose is to act as a lure for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xezojetit.ru/strik?utm_term=how+to+do+calligraphy+on+procreate+without+apple+pencil PDF link annotation
    • http://pufivuziviv.mypressonline.com/arya_samaj_history.pdfIn PDF document text
    • http://ligumexijigab.getenjoyment.net/interpreting_apocalyptic_literature.pdfIn PDF document text
    • http://xagixowedobosab.medianewsonline.com/4th_grade_math_assessment.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417815/normal_5fd219afcedb1.pdfIn PDF document text
    • https://gibotexoruz.weebly.com/uploads/1/3/4/6/134634126/7035184.pdfIn PDF document text
    • https://vedalamiru.weebly.com/uploads/1/3/0/7/130776143/zowedukusup.pdfIn PDF document text
    • http://vuvuga.xyz/84384243372hy5fe.pdfIn PDF document text
    • https://fefokepixax.weebly.com/uploads/1/3/1/4/131452923/wojonuganifoxirama.pdfIn PDF document text
    • http://usecabinets.xyz/41684126069v36sm.pdfIn PDF document text
    • http://notozil.iblogger.org/59954863056.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426421/normal_6052fb8960be9.pdfIn PDF document text
    • http://gopadaxin.mywebcommunity.org/ncert_9th_class_math_book.pdfIn PDF document text
    • http://maxiteguf.medianewsonline.com/26226634798.pdfIn PDF document text
    • http://ninijefaligogi.mygamesonline.org/55363709626.pdfIn PDF document text
    • https://mebemawadaj.weebly.com/uploads/1/3/5/2/135295691/mefugox-lunexe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462974/normal_604d615c71dd9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gexalejal.epizy.com/nursing_diagnosis_list_for_postpartum.pdfIn PDF document text
    • http://sivokag.epizy.com/85132060049.pdfIn PDF document text
    • http://vuzosaxa.epizy.com/carlos_yulo_gold_performance.pdfIn PDF document text
    • http://pasazaxara.rf.gd/xujabojujojosen.pdfIn PDF document text
    • http://bowegasobufur.myartsonline.com/rearrange_pages_acrobat_xi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f07d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF07D 5312 bytes
SHA-256: 392bf9fd4506156361b95725d1852f0f64991ad4f23d7572023d42bb66c37a3a
font_01_sfnt_off00010295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10295 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off00010b23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B23 10832 bytes
SHA-256: 6013c9064c3cc66918e63a9e76dc7fee8d5a75628897095dc790001a348fda97

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