Malicious PDF — malware analysis report

Static analysis result for SHA-256 248377bae53c806f…

MALICIOUS

PDF

40.3 KB Created: 2020-08-10 15:05:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf552ef9bb71e379563b180a777a6257 SHA-1: 7501d9af1049b89f331030735e48295b25dd18ad SHA-256: 248377bae53c806fa138dbbca7b6bcf8773bca07dc1a0efd5dd0b61ef033a651
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'microsoft access programming pdf' and the URL itself, suggesting a lure. The presence of a malicious redirector link indicates an attempt to lead the user to a compromised or malicious site, likely for further exploitation or credential harvesting.

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=microsoft+access+programming+pdf
    • http://files.originalsexyslave.com/uploads/1/3/0/9/130969004/ca2abe.pdf
    • http://files.bishopinservicedays.com/uploads/1/3/2/8/132814119/poziwesol.pdf
    • http://kakibibub.coaching-for-educators.com/uploads/1/3/1/3/131383483/9efdef68f.pdf
    • http://files.mrpadilla.net/uploads/1/3/0/8/130813992/dbb77cc8d48.pdf
    • https://cdn.shopify.com/s/files/1/0434/0288/7322/files/vewinal.pdf
    • https://cdn.shopify.com/s/files/1/0439/8442/1022/files/doki_doki_salvation.pdf
    • https://cdn.shopify.com/s/files/1/0433/7215/0947/files/universal_studios_orlando_mapa.pdf
    • https://cdn.shopify.com/s/files/1/0433/1195/6126/files/lerinidoxojuzixinabus.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46676539889.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/64962889721.pdf
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/how_to_rearrange_pages_in_adobe_pro.pdf
    • https://cdn.shopify.com/s/files/1/0430/4902/5690/files/54784903792.pdf
    • https://cdn.shopify.com/s/files/1/0432/4543/7083/files/26780187823.pdf
    • https://cdn.shopify.com/s/files/1/0439/1046/3643/files/xawabutemavazobemakujafub.pdf
    • https://cdn.shopify.com/s/files/1/0434/9476/8792/files/gowofokixalik.pdf
    • https://cdn.shopify.com/s/files/1/0431/1711/7589/files/arbatel_de_magia_veterum_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/2353/1158/files/12872705162.pdf
    • https://cdn.shopify.com/s/files/1/0431/9651/4461/files/lafibexowez.pdf
    • https://cdn.shopify.com/s/files/1/0434/1923/8562/files/4257752565.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fd2.bin
e29fbbc3ec08d6d16484adde222a57d3592c47c1d687b878b1b563734206bdd6
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD2 5448 bytes
font_01_sfnt_off00007244.bin
682aabc0b147f0ab98ff9691b54edf408f108840e2dd6deb96b8447f8e5e40b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7244 10020 bytes