Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e6d00a8a7d0c793…

MALICIOUS

PDF

70.9 KB Created: 2021-09-07 22:01:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 49ae282b1b7d4a902197fcc7919c2374 SHA-1: d540ca2162c270d34cdfe4e248eb5dcf27b1e912 SHA-256: 0e6d00a8a7d0c7937465b1bcfea031bf5231a3a175d0b74a71a1ec3ba9e234f6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a link farm that redirects to various domains, many of which are hosted on compromised CMS platforms, suggesting an attempt to obscure the final destination and evade detection. The primary goal appears to be directing users to malicious content through these indirect links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a354c11d6fb---28097969637.pdf In PDF document text
    • https://bdsvieclam.com/upload/files/22005345732.pdfIn PDF document text
    • https://adtw1.com/ckfinder/userfiles/files/subow.pdfIn PDF document text
    • http://engroupe.ca/aym_image/files/lerewu.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096386294828---guxigeziluxutilowaxob.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c00ecdce9c6---poranuweluj.pdfIn PDF document text
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/160776ca1021cd---39676077538.pdfIn PDF document text
    • http://elverum-revmatiker.no/images/file/91387137343.pdfIn PDF document text
    • http://ghibms.com/userfiles/files/2530799700.pdfIn PDF document text
    • http://julianina.de/upload/file/28080898058.pdfIn PDF document text
    • https://urbanlivin.lu/userfiles/files/83712675290.pdfIn PDF document text
    • https://netcsemege.hu/ckfinder/userfiles/files/delawipebenapuja.pdfIn PDF document text
    • http://pttaccounting.com/userfiles/files/59002290629.pdfIn PDF document text
    • http://uat2.hkha.com.hk/ckfinder/userfiles/files/49631996009.pdfIn PDF document text
    • http://nw-line.ru/generic/uploaded/likumugeb.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607da8ab651a4---33805089247.pdfIn PDF document text
    • https://szemvidito.hu/sfwkr/feltoltesek/Images/Image/pamexexijexomagebeliriz.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c15c183eeb5---29588660307.pdfIn PDF document text
    • http://mitchelllawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/6131810964.pdfIn PDF document text
    • https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/da4b39ac2e0f78768f2c6ce4a54c7d36/dutikuvamerade.pdfIn PDF document text
    • http://2478.ru/admin/ckfinder/userfiles/files/nuxezopubekovewetiva.pdfIn PDF document text
    • https://kingdomdatesuae.com/userfiles/files/gaviridovamev.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=complex+sentences+explanation+pdfPDF 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_off0000b503.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB503 10812 bytes
SHA-256: ccc8d904e7a1aa937e1e147474fe648a4ffb92f34e2e87d14382299b6e3ddcd8
font_01_sfnt_off0000cdf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDF5 15968 bytes
SHA-256: c562279406f4a3087924c996f04ab81db21a64282f0176d98b1162f36fa6571e
font_02_sfnt_off0000f614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF614 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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