Malicious PDF — malware analysis report

Static analysis result for SHA-256 e057922f84ec2572…

MALICIOUS

PDF

127.4 KB Created: 2021-06-28 04:46:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 77bf8a4d21633d8f8a24fbefdcc59577 SHA-1: 4150c72e51ead200db8b6691cbef0837c40c2bdc SHA-256: e057922f84ec2572f7f9712220bda515fceac38432dc8e7148f2cc62f26115b9
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of an advance-fee scam, luring victims with promises of prizes or funds requiring delivery fees. The presence of numerous links to compromised WordPress upload storage and disposable hosting suggests a distribution network for such lures. While no scripts were directly extracted, the PDF structure and heuristic firings strongly indicate a phishing or scam attempt, likely involving embedded malicious links or content designed to trick the user into further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9695

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://coretry.ru/uplcv?utm_term=demise+in+tagalog
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606d2bcc38056---wusajorotoretomolexuzup.pdf
    • https://giverny-bkk.com/upload/files/92662709109.pdf
    • https://www.basur-tedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160818c9662842---2322973502.pdf
    • https://dagvandearchitectuur.be/_files/file/45851740354.pdf
    • https://triosms.com/userfiles/file/50378966053.pdf
    • http://rufullthrottle.com/wp-content/plugins/formcraft/file-upload/server/content/files/160847813c6ea4---65701163546.pdf
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608620ef277ae---towufuvuwetuna.pdf
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a6d559ebea6---40444413143.pdf
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/a15m7k94grq34g8dghba9rb6d3/pezegi.pdf
    • https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/11tig077v38nmpgm6ip9s8kg26/lidaligemulogewunusafa.pdf
    • http://originalcheck.it/public/img_admin/file///posuwevejewi.pdf
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607451f5337e7---48521220279.pdf
    • http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607b2944294f0---babelipaxaj.pdf
    • https://syteq-pro.com/userfiles/file/32246624545.pdf
    • http://rymwid-training.com/userfiles/file/50193423795.pdf
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/a1f94928c5e25b2642e150a291383ed0/59388356238.pdf
    • https://seerupit.dk/assens/file/27467843691.pdf
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/635ae131353ffc8102d278da540710a2/85912564553.pdf
    • http://asiavent.com/UserFiles/file///mopogubipezitedewipi.pdf
    • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/822ff1f97885d9ecfc4e41731c2339dd/74254928235.pdf
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093a7628c930---muziwigasozilid.pdf
    • https://quickonboarding.com/wp-content/plugins/super-forms/uploads/php/files/54f4585ce87294016708107c6556b27a/nizefixipewavijixudekuta.pdf
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9efb3b8d7---nipupivuvafex.pdf
    • http://wooshin.kr/uploaded/file/71487487360a4f1bf69bca.pdf
    • http://utuin.net/files/fckeditor/file/zopotareliwev.pdf
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c711a76e98c---kitowiwibirikupor.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00018194.bin
6226d00000b41e70f21f085b8b2a84a0d9f81e16c6ac52f09bccc4ea0c3341a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18194 10352 bytes
font_01_sfnt_off000198ef.bin
ef28855046e65e59951353f2a2e7198809d33001cf625e5f8b97ec1a9655becf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x198EF 18644 bytes
font_02_sfnt_off0001c912.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C912 16792 bytes
font_03_sfnt_off0001e11f.bin
9820f40ed514a746b39a9b42c351481acd425b8ad9ac8e74d834ab9ebaf7b22f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E11F 3596 bytes

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