Malicious PDF — malware analysis report

Static analysis result for SHA-256 be2d00c9365dc8f3…

MALICIOUS

PDF

96.1 KB Created: 2021-08-01 16:44:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: b73d078ca6cd5f7180065d2158b0c93b SHA-1: f2e089fec406a8ae6f74377f226fe5f610e80ab8 SHA-256: be2d00c9365dc8f3bcb421720c2c665c6d229548c9ad906d01d0cff48343eccf
184 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to various domains, many of which are associated with compromised CMS uploads or disposable hosting, indicating a link farm designed to distribute malicious content. The presence of a callback lure suggests a phishing or tech-support scam pretext. ClamAV detection and ML classification further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 8

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://himanshikitchen.info/viking1/uploads/files/5679937819.pdf In PDF document text
    • https://sayurhijau.com/contents//files/24207171600.pdfIn PDF document text
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608bc433e92ad---foliluxupefatib.pdfIn PDF document text
    • https://pet-fashion.ro/mm/file/vaxuxupuworemidaw.pdfIn PDF document text
    • https://powermailer.in/userfiles/file/48475875141.pdfIn PDF document text
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bfc6a6cc6b---rufani.pdfIn PDF document text
    • http://mauchlineware.com/html/chapelstreet/web/userfiles/files/wemojigikip.pdfIn PDF document text
    • http://delve-cr.com/uploads/kudakuke.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/0i9bgt7kk2naalph7hj5iggmh0/wawagokuximiwinipos.pdfIn PDF document text
    • http://aostavet.it/userfiles/files/raxijuwinatatajevegaz.pdfIn PDF document text
    • http://alicekhenrylawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/jatunejefovogudigimu.pdfIn PDF document text
    • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/2sd9mcbs7p9dc9aup6ttjsa36n/tedusewisuxaxozib.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/16bc5a50540574c17e48abc899d79005/97541083622.pdfIn PDF document text
    • https://ikansambel.com/contents//files/31242318580.pdfIn PDF document text
    • http://01host.ru/userfiles/files/fegefojavuvupa.pdfIn PDF document text
    • http://yesilderecine.com/admin/editor_resim/file/26415824992.pdfIn PDF document text
    • http://www.egavilanes.com/ckfinder/userfiles/files/zuxokuwolarir.pdfIn PDF document text
    • http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/oii45dniefnb2l4q1ci5v6cq02/gulukepewime.pdfIn PDF document text
    • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/2bomae4a9piscsb72de8gu0ei5/dutudorubum.pdfIn PDF document text
    • http://videofilm-tv.ru/content/File/bodolexojalili.pdfIn PDF document text
    • http://dobraukraina.org/sites/all/sites/dobraukraina.org/files/63271238144.pdfIn PDF document text
    • https://5uempat.com/contents//files/ripiken.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/2606314e4cae9c516ba298cac5223b2b/84504601969.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=who+do+i+call+if+i+lost+my+unemployment+cardPDF 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_off000110d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110D2 11092 bytes
SHA-256: 99bf9be6b151295446c643d3ad613ccf72fdd1b9ae416e378a7545e459042aa4
font_01_sfnt_off00012a82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A82 17792 bytes
SHA-256: aacb66c36460d6bc70872980cc5fceaf5eeed071d3ab3461672a2f5d7881d7c1
font_02_sfnt_off00015968.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15968 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1