Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ccc8b39be342675…

MALICIOUS

PDF

69.2 KB Created: 2021-09-29 01:22:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 2d214c6452576ffc843fce70bafd791b SHA-1: 9af7f0e76beef960de1d3956d0824ae7b80db95b SHA-256: 0ccc8b39be342675bc9bf29acbcdb323b266fb45dc537952a64c642d7f8479b4
126 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs pointing to external domains, many of which are associated with link farms or potentially malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests these URLs are part of a scheme to distribute malicious content or phish for information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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 http://mrhobbscoffee.com/images/uploads/file/69016152546.pdf In PDF document text
    • http://pilanatofishing.com/home/sandbox/domains/shelter.sandbox.tritek.hk/public_html/ckfinder/userfiles/files/benisegomakote.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614262dd71320---toxepe.pdfIn PDF document text
    • http://angelojrobles.com/admin_initial_test/userfiles/file/nopafafinelolivuninunu.pdfIn PDF document text
    • http://mayinmaunhat.com/upload/files/bijeruvunawufaditer.pdfIn PDF document text
    • https://kamhosting.nl/ckfinder/userfiles/files/suvawuv.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613590b120f76---4204943490.pdfIn PDF document text
    • http://binhchuachay.info/Images_upload/files/63106582341.pdfIn PDF document text
    • http://swaving-stalinrichting.nl/ckfinder/userfiles/files/9701013977.pdfIn PDF document text
    • http://ps-chiptuning.hu/userfiles/files/61136846875.pdfIn PDF document text
    • http://xn--939a66v0zjo3bcvdmrp.com/data/ckfinder/files/348062749.pdfIn PDF document text
    • http://saharun.org/uploads/ckfinder/userfiles/files/delojisesedubi.pdfIn PDF document text
    • http://galluccifaibano.com/userfiles/file/10258477579.pdfIn PDF document text
    • http://wingmanplanningdemo.com/userfiles/files/wawewubar.pdfIn PDF document text
    • http://fmafirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/79512076101.pdfIn PDF document text
    • http://teplorium.su/userfiles/file/85933598222.pdfIn PDF document text
    • http://architects-desk.com/uploadsfile/11032637804.pdfIn PDF document text
    • http://gs-metals.com/filespath/files/20210903132649.pdfIn PDF document text
    • http://kirilmazbardak.com/userfiles/file/21119320796.pdfIn PDF document text
    • https://batikatravels.com/userfiles/file/zemalobaseruv.pdfIn PDF document text
    • http://doggystylzgrooming.com/admin/photos/file/nikepoga.pdfIn PDF document text
    • http://conditum.nl/userfiles/file/68684791227.pdfIn PDF document text
    • http://dpnovelty.com/upload/files/wovebatefixane.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=mia3+android+11+update+problemPDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b0f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0F1 10844 bytes
SHA-256: 103b6e8eba7961ec759c6b9d63b16c04f1eb7030b39f0d5ef1dedcc8b9b5ff95
font_01_sfnt_off0000c9b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9B3 14956 bytes
SHA-256: 1f88bccbabf8ab821b85e5bc13e6de9a0ffac319aa3d445537382adde0fec657
font_02_sfnt_off0000ef2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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