Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0a545c3a1c7f53f…

MALICIOUS

PDF

74.8 KB Created: 2021-02-22 12:23:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 85fc01060ddc5dacbf6fbcd5d9b9fc01 SHA-1: 6b2e657e9dbbf956e7a4b9d83791641de86e3f6c SHA-256: e0a545c3a1c7f53f870aa6ae3915a5ad617ccc82a5f8d16d98d398b5e254c952
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The sample was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many of which point to disposable hosting and are structured as link farms, suggesting a phishing or malware distribution campaign. The presence of external URIs and the link farm heuristic strongly indicate that this PDF is designed to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/123?utm_term=harbor+breeze+ceiling+fan+manuals PDF link annotation
    • http://esclub.pro/kipadiperifawaregfjq8.pdfIn PDF document text
    • http://sputnews.com/18159270410f679z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467027/normal_5fd63a12aec58.pdfIn PDF document text
    • http://operationhomeplate.com/audio_joiner_program42k5k.pdfIn PDF document text
    • http://dimax-matrasy.ru/best_luxury_online_shopping_sites_usa2g017.pdfIn PDF document text
    • http://trujillostacoshop.com/52944428629jkvvm.pdfIn PDF document text
    • http://fringigejy.site/54063064856zl70a.pdfIn PDF document text
    • http://tixshopclub.fun/75009310268iql8k.pdfIn PDF document text
    • http://mebel-albero.ru/the_hula_hoopin_queen_worksheetsja7zb.pdfIn PDF document text
    • http://monoga.space/offline_maps_android_2020xag5z.pdfIn PDF document text
    • http://alcexpress1.xyz/jisevubu70uc.pdfIn PDF document text
    • http://shoplus.info/refusiwutuzozugon5jbbr.pdfIn PDF document text
    • http://iglivesupportteam.com/ashok_leyland_dost_plus_brochurei9ggg.pdfIn PDF document text
    • http://kugamuwefula.iblogger.org/microsoft_word_table_of_contents_not_updating_page_numbers.pdfIn PDF document text
    • http://martans.space/22275310832ba4sl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/23673335660.pdfIn PDF document text
    • http://dinotowiteve.rf.gd/kijim.pdfIn PDF document text
    • http://fisuzes.epizy.com/32492425314.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/bosch_dishwasher_manual_india.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e743.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE743 5352 bytes
SHA-256: 911d8dfbab61e2830f5739127e6e5952d0a5072f8af678daddf50de704f3495f
font_01_sfnt_off0000f96c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF96C 10728 bytes
SHA-256: efe667f679b7416682672f5d00b539293844545970bde13f3b2c611c7e8f3eb2

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