Malicious PDF — malware analysis report

Static analysis result for SHA-256 046ee1307ca631ec…

MALICIOUS

PDF

76.3 KB Created: 2021-03-02 15:36:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 6e9ad5f59e3f409b28d82f2dc2d43c1f SHA-1: 5f00e88f237a2497e38176084854d4ad3f261dff SHA-256: 046ee1307ca631ecad0f8f74942a07c092c79f2c7c29de6f1c089e2951087882
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains a call-to-action phrase and an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. The presence of numerous links and disposable hosting further supports a malicious intent.

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://seumenha.ru/award?keyword=magisterium+book+6+release+date PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413969/normal_6023628fdd7c6.pdfIn PDF document text
    • https://cdn.sqhk.co/tekemozuj/jgdshch/baby_animals_names_and_sounds.pdfIn PDF document text
    • http://borolepejawodur.22web.org/muludagaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378836/normal_601b0388a3025.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470542/normal_6009a233792ef.pdfIn PDF document text
    • http://vatojaginasi.22web.org/gary_zukav_seat_of_the_soul_book.pdfIn PDF document text
    • http://bifitiguz.iblogger.org/solitaire_for_windows_8_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389074/normal_5fdf67ca88e56.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485570/normal_601d6c138b48d.pdfIn PDF document text
    • http://bovewowi.iblogger.org/taveselifejemisisugima.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368969/normal_600f1f1fea07e.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
    • https://s3.amazonaws.com/simujix/ernhrungsplan_anabole_dit.pdfIn PDF document text
    • http://gokozir.rf.gd/sample_eviction_notice_word_template.pdfIn PDF document text
    • http://jomovexujufadi.epizy.com/17846605345.pdfIn PDF document text
    • http://nufejubonuviwo.epizy.com/us_army_certificate_of_appreciation_template.pdfIn PDF document text
    • http://dagoroj.rf.gd/70135459946.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/business_letter_format_sample_with_letterhead.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_off0000e0c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C3 5284 bytes
SHA-256: 42d13b6ab7fa06546dc2928a3c0fc5af5647875cd28358cf604441ad00954ff2
font_01_sfnt_off0000f2bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2BF 10416 bytes
SHA-256: aa7a93ba1ac3e7f9d2e5f6da6962986e48d99383f50e8fde4dd51ed0534f57da
font_02_sfnt_off000115df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115DF 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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