Malicious PDF — malware analysis report

Static analysis result for SHA-256 f32e6a5c41cb1d89…

MALICIOUS

PDF

95.4 KB Created: 2021-09-03 06:54:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: ce55106cdbb5b02ed57f8e4a0453321e SHA-1: c8148d204c213dfd0b89f794e5d0514a02e4d83a SHA-256: f32e6a5c41cb1d899180bd763b31f9184d2e03d1364028a9aadc467e555e1a1f
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to potentially compromised websites, indicating it functions as a link farm for phishing or malware distribution. The 'SE_CALLBACK_LURE' heuristic strongly suggests the document's purpose is to trick the user into calling a phone number, a common tactic in tech support scams or fraudulent billing schemes. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence score point towards malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 7

  • 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.
  • 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://honyi.tw/ckfinder/userfiles/file/nimeboruj.pdf In PDF document text
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607269a9a04e4---wisedezobozalojurimo.pdfIn PDF document text
    • https://dimensioninteractive.com/WYSIWYGImage/file/19756122165.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f01a7a5684c---gujisuladokojupazepi.pdfIn PDF document text
    • https://webmenuplus.com/images/file/wafepegatejixulojagukol.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/m9f9lbglbkl61h5oaffam1u9p0/21728966186.pdfIn PDF document text
    • http://parmalab.it/userfiles/files/64197497315.pdfIn PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160a320a1ca4f0---82470703128.pdfIn PDF document text
    • http://motocams.cz/ckfinder/userfiles/files/40315371479.pdfIn PDF document text
    • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094aa02333aa---7581183906.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1674b03dbf---20765838453.pdfIn PDF document text
    • https://vayoto.vn/userfiles/file/1630668131.pdfIn PDF document text
    • http://drentmedischadvies.nl/uploads/files/32526817457.pdfIn PDF document text
    • http://gz-theoutfit.com/UploadFiles/FCKeditor/20210709022611.pdfIn PDF document text
    • http://smartpaintingplus.com/userfiles/files/mamabojitelolanutesipefu.pdfIn PDF document text
    • https://tagoproperties.com/ckfinder/userfiles/files/48493934706.pdfIn PDF document text
    • http://uzks.hr/upload/datoteke/moripatedoposiravitixef.pdfIn PDF document text
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a695071e775---13137104008.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160d359b1cdf50---61186013780.pdfIn PDF document text
    • http://meble-tk.pl/userfiles/file/63926632129.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/1u0anporhpucooko8ipjs2vnmp/20073743983.pdfIn PDF document text
    • http://iwort.de/userfiles/file/silipugezazipojep.pdfIn PDF document text
    • http://vce34.ru/attachments/file/70680849430.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=smart+bracelet+user+manual+y11PDF 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_off000107e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107E4 10660 bytes
SHA-256: feed92c4d28aaa3ab31da69519f4cc3e7b6c9f0256d3e0482546fd68cfc41da3
font_01_sfnt_off00012065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12065 20876 bytes
SHA-256: 8eac81b8b35b628c7ebaa9d0a4fea437c99b7cd9bd2f2fde14016c163204b7dd
font_02_sfnt_off000157e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x157E8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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