Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3caa112822adf8d…

MALICIOUS

PDF

63.9 KB Authoring application: Solid Converter PDF
MD5: 4081d9e8872bbdaee71dda48bb7899d2 SHA-1: e8b310397bc4510586b87dc32438dfb55402352a SHA-256: c3caa112822adf8d39491265b80a553aa9d07935ac00da71982b48d6e9a86b5a
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO manipulation or to redirect users to malicious sites. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent. The document body itself is heavily obfuscated and does not provide clear user-facing content, but the heuristic firings strongly indicate a link-farming or redirection attack.

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://myservicecenter.ru/uploads/2020/01/28/2613617c138d5b.pdf
    • http://nethandilin.fo/uploads/1/3/0/2/130273748/b60af880599a.pdf
    • http://norwooddentalblog.com/uploads/1/3/0/4/130483684/vamerudada.pdf
    • http://sandravictoria.weebly.com/uploads/1/3/0/6/130620961/1662176.pdf
    • http://onlytopsaler.site/uploads/1/3/0/2/130289308/4030b.pdf
    • http://jas.event-essence.com/uploads/2020/01/28/wazikilawe.pdf
    • http://harrisonashtonphoto.com/uploads/1/3/0/6/130604419/484762.pdf
    • http://middletnapic.org/uploads/1/3/0/5/130543053/6662394.pdf
    • http://mivorek.whitection.ru/uploads/2020/01/28/kelipuvifabu_loxilamanulok_vugoliwibosebi.pdf
    • https://xipiwizagemodo.weebly.com/uploads/1/3/0/3/130312986/ronavuvupige.pdf
    • http://mysistershouseonline.org/uploads/1/3/0/6/130620747/xamuvo_towek_mugidapoditona.pdf
    • http://killjoy.info/uploads/1/3/0/3/130313156/debosujevit.pdf
    • http://regafe.angelis-spa.com/uploads/2020/01/29/gominaremorivobub.pdf
    • http://bendigolab.com/uploads/1/3/0/6/130604838/bibiladazades_vurolur_xasil_jigaxafamiro.pdf
    • http://staceyjanedouglas.com/uploads/1/3/0/6/130621882/niwunawufufibi-zozitu.pdf
    • http://sisterhood-of-prosperity.club/uploads/1/3/0/4/130491850/9038215.pdf
    • http://txa4d.com/uploads/1/3/0/5/130551271/c7c4709425.pdf
    • http://callanjames.co.nz/uploads/1/3/0/6/130604703/a4469.pdf
    • http://dozuvuwawo.wapfan.ru/uploads/2020/01/28/d923f66d6.pdf
    • http://minixclusive.com/uploads/1/3/0/5/130550742/joladekivizaf_bilagitebagabes_petod.pdf
    • http://northern-carbon.com/uploads/1/3/0/5/130589442/pogesip_vikajuwo.pdf
    • http://beckandclem.com/uploads/1/3/0/6/130620340/9111077.pdf
    • http://diabetesrelatedretinopathy.org/uploads/1/3/0/5/130551006/8658834.pdf
    • http://mysterclothingbrand.com/uploads/1/3/0/6/130604508/b8cbc559c8f8790.pdf
    • http://morrowtimes.com/uploads/1/3/0/4/130489262/mujuru_dewupe_gomumusabanuru.pdf
    • http://cecilyeiferle.com/uploads/1/3/0/4/130436450/130436450.html#viking+raid+newspaper+report
    • http://sisterhood-of-prosperity.club/uploads/1/3/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001583.bin
c888cc337a44bfee27ee5ba723fee16313d16e70871d853c79d39b2dc9f3bc83
pdf-font-stream PDF embedded font (sfnt) at offset 0x1583 8328 bytes
font_01_sfnt_off0000aa12.bin
b5cbe6ae889a1b57a3239b72842f1e8072b64006066540b74ef2739d8d38d7e3
pdf-font-stream PDF embedded font (sfnt) at offset 0xAA12 2052 bytes
font_02_sfnt_off0000b330.bin
c45ecc3521217a1dc016c14e045d78f78e0d194bf1e1893e402d944f9961a49f
pdf-font-stream PDF embedded font (sfnt) at offset 0xB330 16080 bytes