Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c7f79ee8a0bcb4e…

MALICIOUS

PDF

74.5 KB Created: 2021-04-25 07:40:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0d214232194e850763177e5632c97424 SHA-1: 14a47f189f72792f8a9b64e8c3523c10f0c7fe53 SHA-256: 2c7f79ee8a0bcb4e536c38fd956852d00df8f7c71807e3868bbad63affbd1c91
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xajibur.ru/strik?utm_term=cloud+9+cast+jonah PDF link annotation
    • http://kepuxom.mypressonline.com/what_books_are_similar_to_magic_tree_house.pdfIn PDF document text
    • http://mosomupusafebin.medianewsonline.com/dulatafopufefivosawedunu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393488/normal_5ffde34ac426a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370068/normal_5ff3831ed4a69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403129/normal_60547c65ec969.pdfIn PDF document text
    • http://support-copyrighthelpservice-about.com/22540791533ihi6.pdfIn PDF document text
    • http://shopbest.online/kasolileta318qu.pdfIn PDF document text
    • https://lomagifotoji.weebly.com/uploads/1/3/0/8/130814873/jolomonupi.pdfIn PDF document text
    • http://greatholl.com/femudutogiweryk65y.pdfIn PDF document text
    • http://nout-sale.site/how_many_calories_in_dunkin_donuts_blueberry_muffinmbgtp.pdfIn PDF document text
    • https://tesiligozi.weebly.com/uploads/1/3/1/4/131407846/wutodajixozezim-gixew-zitepoj-kuverokavidunu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375073/normal_5fd87fa69e383.pdfIn PDF document text
    • http://melofuwi.getenjoyment.net/87254249748.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393625/normal_600bfa6f33398.pdfIn PDF document text
    • http://salonhq.xyz/47896979894yjvq2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ae40ec61-d20a-40a8-9c94-208d4569f534.filesusr.com/ugd/5d0862_1dad80bbe2a4493dbbb6420a8d68a90c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b753dca-c413-421a-9b8c-e0cecced2f7e/fisher_price_rainforest_jumperoo_change_height.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f38f8e90-3216-4250-a7b1-6e303e3b18d7/16586224919.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85796543-6a10-4520-b7ab-62ac0e0ad9a4/el_coreano_de_corea_minu.pdfIn PDF document text
    • https://6f4861c6-cdf0-4a5f-ba2d-f9c5e5bfbee6.filesusr.com/ugd/77941b_7636361ad27d4867a66364bcf800a24d.pdf?index=trueIn PDF document text
    • http://jisunopesaluzi.atwebpages.com/bestiario_juan_jose_arreola.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e72e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE72E 5068 bytes
SHA-256: efb9339c7fbcb9fa7ce7e5e4c6aedb502fd3af235bae166dd0e28540a6c95c03
font_01_sfnt_off0000f865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF865 10732 bytes
SHA-256: 7dfeca33911f9454d53af3936499ec014e5853ca531fccad2833aefe9751850a

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