Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ab0fdc0f6685d0b…

MALICIOUS

PDF

82.2 KB Created: 2021-05-12 07:43:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ebf094ef4c04b2b2ba5fd65d71797f16 SHA-1: 20a26314abd39ab5eeeb08b7eae91a18d4886bbc SHA-256: 0ab0fdc0f6685d0b382c9743b40c848bf5695b9a2aacf126c9417b6212fe6919
136 Risk Score

Malware Insights

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

The PDF contains a heuristically identified random URL link that points to a suspicious PDF file, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support the malicious nature of this file. Although no scripts were extracted, the presence of a malicious link suggests the document is designed to trick users into downloading a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://activepymes.com/pub/file/naveruxulawogaj.pdf
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/1607e8d508a9ec---kiwanode.pdf
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d0eb0d4439---57724761532.pdf
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/46e2665d47d19e673a07980e3960ea15/lozibufidikov.pdf
    • http://juniorsmagazine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e0c24bc96b---16306327408.pdf
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607df0e29ea07---lizomatofeketosurozamanaj.pdf
    • https://advance-pack.com/editor_upload/file/66013838849.pdf
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608050d2cdfe7---37967518074.pdf
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608b4e0772b6f---gogarukifisig.pdf
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/672edc36d6deeca647839213601f8d30/xatunekirutedatonubepaker.pdf
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/d7aa7b274c9996b28ffc160c64a6cdf0/sogorupoj.pdf
    • http://workprohealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ebcdc4480c---74153061636.pdf
    • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073f4b96988e---30054474453.pdf
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/18b17e4e12b136bf107fc0fa9f29154c/kiwenedefip.pdf
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606e87a91d321---16292018493.pdf
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/0ab2f8677737e8270208b9dbe56d5775/28854629080.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=baiju+bawra+film+songs
    • http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/f615e2ab1b33e90ee095533701637ba3/jovelijujudodinovid.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
    • 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_off0000eef2.bin
a2266dfbe85e7f6d1927105e4dddec8e3e6974d7aa200c9a09e8a36b8c3793d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF2 5444 bytes
font_01_sfnt_off0001017b.bin
22679c5ff1f9f3d6f397d37aabeae899e72136ba85577e0959a7d4dd4fe809e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1017B 11016 bytes
font_02_sfnt_off00012719.bin
e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12719 16092 bytes

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