Malicious PDF — malware analysis report

Static analysis result for SHA-256 88c3c68e2d75e7a8…

MALICIOUS

PDF

45.1 KB Authoring application: Soda PDF First seen: 2020-08-25
MD5: f4becc7365a0c7cc94241dfa48102ce4 SHA-1: 5adf89125899ae6f4f4dd6259ccf45f4f3196ec8 SHA-256: 88c3c68e2d75e7a8a11188aaee057784a6315aa843d01cf38b8f634c7dbb2bfb
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a callback phishing lure, presenting itself as a health insurance claim form to trick users into calling a provided number or clicking on embedded links. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely leading to a phishing site or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://montanabridalshows.com/uploads/1/3/0/6/130603927/vejezatalemukepagila.pdf In PDF document text
    • http://wenebe.superstudy.ru/uploads/2020/01/27/didetedar.pdfIn PDF document text
    • https://zawexosuzab.weebly.com/uploads/1/3/0/5/130588583/tuligavixomolam.pdfIn PDF document text
    • http://geoffwehmeyer.com/uploads/1/3/0/6/130604606/jemutenefizoso_lawalos.pdfIn PDF document text
    • https://rogemifuke.weebly.com/uploads/1/3/0/6/130603944/titef_duwuwivoxeb.pdfIn PDF document text
    • http://jowujekija.agicole-acces.com/uploads/2020/01/28/kobavevaxujomu.pdfIn PDF document text
    • http://sak.askaryan.com/uploads/2020/01/28/dixogitivurovu-rurada.pdfIn PDF document text
    • http://adamhenryink.com/uploads/1/3/0/4/130477090/wusafuvusike-mozev.pdfIn PDF document text
    • http://doeatjangkir.com/uploads/1/3/0/6/130639743/biguw-vexulemeg-zisikefano-levakozo.pdfIn PDF document text
    • http://commstech-hub.eisf.eu/uploads/1/3/0/6/130605028/tiwusonom_dujozukosakup_lefom_mizadewowularu.pdfIn PDF document text
    • https://piwetusidazu.weebly.com/uploads/1/3/0/5/130551364/95cf6eeb109547.pdfIn PDF document text
    • http://dumok.club/uploads/2020/01/28/rasukopudusad-tubuk-bisejonemizu.pdfIn PDF document text
    • http://cresaptownsportsmanclub.net/uploads/1/3/0/4/130483805/130483805.html#aa+health+insurance+claim+formIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001384.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1384 8144 bytes
SHA-256: aaac00c060da2f3bfee468f1f2061734f9e83b2061086713018ba6849f62b1b5
font_01_sfnt_off000069f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F1 16036 bytes
SHA-256: 779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63