Malicious PDF — malware analysis report

Static analysis result for SHA-256 78fc57e01fbf8cc0…

MALICIOUS

PDF

95.2 KB Created: 2021-08-19 12:01:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0d11875c4069433c623a9e047fa55ba3 SHA-1: ff3e539c8ffc2e5b7c0e04097b9962a6c263f7b6 SHA-256: 78fc57e01fbf8cc0cca1286cfa192d2977ee22a248db6b14140b3cd63f0c6e0b
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF is identified as malicious by ML classifiers and ClamAV, and exhibits characteristics of an advance-fee scam lure. It functions as a link farm, directing users to various potentially compromised or disposable hosting sites, likely to facilitate the download of further malicious content. No scripts were extracted, but the structure and URL patterns suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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 http://rajeshjshahani.com/clients/d/de/defaee86e9f1fedea086b53a5072ac2c/File/sipasufewabawejemuw.pdf
    • http://huanghels.com/filespath/files/20210814051702.pdf
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/t4j2c4jm53tj49uj2shi65p5q9/72301338209.pdf
    • http://ewhamd.net/upFiles/ckeditor/files/37332979705.pdf
    • http://afslab.asia/upload/files/lonupafagowamizesezagok.pdf
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3bd8913670---53894258646.pdf
    • http://ordinate-ltd.com/file_media/file_image/file/80118439443.pdf
    • http://pinetreerealty.ca/clients/55933/File/33769655401.pdf
    • https://delphin-restaurant.com/ckfinder/upload/files/20879882320.pdf
    • http://qunjl.com/userfiles/files/kuranujemurovanadaramoz.pdf
    • https://ivanda-commerce.hr/userfiles/file/gexox.pdf
    • http://dalboncostruzioni.it/userfiles/files/dikunerozomukeneguvesaxu.pdf
    • http://siblom.ru/files/upload/file/40484324219.pdf
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd771c62b37---7013925820.pdf
    • https://ottenburger.com/userfiles/file/mufijo.pdf
    • http://soepcentrale-dekeyser.be/userfiles/file/51264773404.pdf
    • http://tutek.eu/userfiles/file/16337980874.pdf
    • http://vizcsap.hu/files/file/pefonutuxif.pdf
    • https://accu-split.com/userfiles/files/sewagitalewasora.pdf
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/iq452o885cp91t11r2qj70aqnj/zekuzorugewikojoposebiw.pdf
    • https://rintrans.com/files/gakedalidemaxofim.pdf
    • https://www.supremecaravans.com.au/application/third_party/ckfinder/userfiles/files/luxuvaxibizojebememu.pdf
    • http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160815686d0148---zarovesugawugomifa.pdf
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/c1d18e4117e1006eee411fc2d0c5fdd4/tevotedogezilimaratam.pdf
    • http://swiftnb.com/ckfinder/userfiles/files/33709516916.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=fish+in+a+tree+pdf+download+free
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010ff6.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10FF6 16792 bytes
font_01_sfnt_off0001280d.bin
30465796e7854f66696eabfbb86235fedc29a42d9bb49dc038e023eeef31f7d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x1280D 10656 bytes
font_02_sfnt_off0001406d.bin
9efd297d8486124b446abedb53e21212890dfbd19dd0528e4b1989346c07acae
pdf-font-stream PDF embedded font (sfnt) at offset 0x1406D 17928 bytes