Malicious PDF — malware analysis report

Static analysis result for SHA-256 069a6c5abda58cd1…

MALICIOUS

PDF

81.3 KB Created: 2021-09-16 16:21:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 7dfd1cece0de9598554be048dde69df7 SHA-1: b7f91c03130ce9824ad4abf39206ed2a52eb4d3b SHA-256: 069a6c5abda58cd127d8ffe1a8ef134a33122c7950026d8ceb69db8838b6d1ff
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to multiple domains, some of which are compromised CMS uploads and disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious sites, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://allytemp.ru/uplcv?utm_term=live+home+3d+apk PDF link annotation
    • http://weiken-rc.com/upload/files/ladidobofokumo.pdfIn PDF document text
    • https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161400d575325f---62260291883.pdfIn PDF document text
    • https://hkfew.org.hk/ckfinder/userfiles/files/kuwuwemiwanixorase.pdfIn PDF document text
    • https://woft-dining.com/webroot/editor-uploads/files/34885032731.pdfIn PDF document text
    • https://www.wroclawmodelshow.pl/ckfinder/userfiles/files/futovinefuvawelinikinur.pdfIn PDF document text
    • http://www.ctnphrae.com/ckfinder/userfiles/files/89525918334.pdfIn PDF document text
    • https://usgcambodia.com/userfiles/file/bozikipefox.pdfIn PDF document text
    • http://lmtechsolution.com/userfiles/jovixewiselebomuwedibaxaz.pdfIn PDF document text
    • http://wwpokebar.com/uploads/files/dixowimemabanuwivez.pdfIn PDF document text
    • http://melly-incendie.fr/img_db/golokofo.pdfIn PDF document text
    • https://ezastupitelstvo.sk/editor_uploads/system/files/tupuzegemalabugonuni.pdfIn PDF document text
    • http://jobsandhi.com/uploaded_files/userfiles/files/gemaziwanuratekunalu.pdfIn PDF document text
    • http://greenbiotech.vn/uploads/userfiles/file/137650620.pdfIn PDF document text
    • http://basketaci.cz/UserFiles/File/kuvalamenafedezi.pdfIn PDF document text
    • https://palezieux.com/ckfinder/userfiles/files/91572279002.pdfIn PDF document text
    • http://theurbanbazzaar.com/userfiles/file/9596385234.pdfIn PDF document text
    • https://gegeny.hu/uploads/file/63885152559.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/9fbb61cf70fa50383fdfea144e4b15f5/movosesatiketipesi.pdfIn PDF document text
    • https://branchennachweis.eu/userfiles/file/fonivibugosokupebidupa.pdfIn PDF document text
    • https://bwawarszawa.pl/upload/file/zarokabowitotevovipovozij.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/161410c567155a---gewitunawesibi.pdfIn PDF document text
    • http://innersolutions-uk.com/file/96009486829.pdfIn PDF document text
    • https://silky.ae/images/bulk_images/files/22380492797.pdfIn PDF document text
    • https://ckfinder.pamlskovnik.cz/ckfinder/userfiles/files/lowafujijikabogetakikidu.pdfIn PDF document text
    • http://kaies.net/upfiles/file/34064868497.pdfIn PDF document text
    • http://teamtrinity.net/trinitya/file/35446358867.pdfIn PDF document text
    • 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_off0000d645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD645 19004 bytes
SHA-256: c7c572db02d1877e491982e902901cbd406d1093a6bf303d3e877bdd5f6ace20
font_01_sfnt_off00010773.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10773 10428 bytes
SHA-256: d10b722d0659adf8e3aca7e6cc448df143b971d98f73fc294229191df954df92
font_02_sfnt_off00011f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F22 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.