Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa77fd87821f3c44…

MALICIOUS

PDF

53.9 KB Created: 2020-08-07 06:49:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c105daaa7b3ff636e21f8bbe5a2c7090 SHA-1: 093cd9b59113fec079323e791e9ec17abb219141 SHA-256: aa77fd87821f3c446b4bef6a0d0acf96082860a51ca3cb309668d4da733c3d67
150 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, with one heuristic specifically identifying a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the one flagged by the redirector heuristic. This indicates the primary purpose is to redirect users to malicious sites, likely for phishing or to serve further malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.ru/pify?keyword=biblia+romana+ortodoxa+pdf
    • http://files.creepyoutfitlab.com/uploads/1/3/0/7/130775712/guworor.pdf
    • http://lizori.caremoresa.com/uploads/1/3/0/7/130775219/negewelexesukod_jasimiza.pdf
    • http://files.designmyhouseplans.com/uploads/1/3/0/8/130813778/jokitixi.pdf
    • http://files.drbrandihonaizer.com/uploads/1/3/1/4/131407155/365920.pdf
    • https://cdn.shopify.com/s/files/1/0438/2454/5949/files/pezitifulidu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5158/1591/files/rawuvekipoget.pdf
    • https://cdn.shopify.com/s/files/1/0437/6435/1130/files/jufogexaferikamasijobot.pdf
    • https://cdn.shopify.com/s/files/1/0428/0067/7031/files/47774751741.pdf
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/pafanefavuzexezobuvita.pdf
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/kajowu.pdf
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/kenmore_70_series_washer_won_t_drain.pdf
    • https://cdn.shopify.com/s/files/1/0428/7863/2095/files/90353355463.pdf
    • https://cdn.shopify.com/s/files/1/0437/4138/0759/files/sofafebifame.pdf
    • https://cdn.shopify.com/s/files/1/0427/7485/5846/files/17879186745.pdf
    • https://cdn.shopify.com/s/files/1/0427/9966/1223/files/nltk_remove_stop_words.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000871c.bin
c5f4bd8fe53f70db6a14b0aa9f4185c0d3a8dc2eb1a01b8abaf0c21ed286bd20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x871C 4936 bytes
font_01_sfnt_off000097b2.bin
325f1ea02815e00174d8232cdbafb17f33bd5d84fc311930a3f68307e98e5e13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97B2 11084 bytes
font_02_sfnt_off0000bb05.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB05 4324 bytes

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