Malicious PDF — malware analysis report

Static analysis result for SHA-256 03e0867791e840c9…

MALICIOUS

PDF

71.2 KB Created: 2021-05-01 11:47:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e30339f13f200b7180a1550f7b46aa3 SHA-1: d7ce55dc6142ac959f5e845c77f73d4da50644eb SHA-256: 03e0867791e840c992bfae4bf908da9bc7343a57a8f9313b155f1629a77a9f86
156 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics strongly suggest this PDF is part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.movingwithmagna.com/wp-content/plugins/super-forms/uploads/php/files/c9aabca0b6794517acece227cc750beb/38674123439.pdf
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ca83933e03---jepikipijesexataji.pdf
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/fhpspg2a2qlustk5gonbjjqqer/panatowexarogilo.pdf
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/f870782f2282aeea4d44943079dee43e/90249154449.pdf
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/e23tu64sem9g9cpqsgvshqfjb3/wijuku.pdf
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083129db822a---86705837428.pdf
    • https://lightsourceindiana.com/wp-content/plugins/super-forms/uploads/php/files/ff8a4687e154d8ebbaeba5584c3d0e84/62147818435.pdf
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/4a76638d9ccc19ea229398c445e34e05/lotamaribabikube.pdf
    • https://segurosjdd.com/wp-content/plugins/super-forms/uploads/php/files/ktsnldbj5ecn9f717gcsnr1nd0/383950397.pdf
    • https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160850176a458f---10896753994.pdf
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/4f162c8641992180e94aa8265c0a716b/wonunaji.pdf
    • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16076c75986407---83014522737.pdf
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606fb31950065---nuzosigukakepo.pdf
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607421b90f85f---siwowavoruwibavada.pdf
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/d0ca89f6945f8828f5b8576ce63a345e/26671110066.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=propiedades+del+alpiste+para+diabeticos+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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6e6.bin
45b82cfa3825572ca16f58c1f97b5adeaddcd1d74180330de13ed0e1c6544fc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E6 5288 bytes
font_01_sfnt_off0000e8e9.bin
f5942237a47651f3fdcea38f5c0b796b0a739b87ff8ca48b1a4033999d9a6f82		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E9 11532 bytes

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