Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c22d62493bffdef…

MALICIOUS

PDF

42.7 KB Created: 2020-08-24 23:23:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf868a8efc6a850066ad29431c0814bf SHA-1: caf9bf3ffbf3b2bda78335572929973ddf9fc853 SHA-256: 4c22d62493bffdef6f8952380811f91269507c0304be8a0717d7c5395e61c0c7
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains text related to a 'funny baby shower mad libs template', suggesting a social engineering lure. The presence of a malicious redirector indicates an attempt to lead the user to a 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=funny+baby+shower+mad+libs+template
    • http://womelep.caseyelewis.com/uploads/1/3/1/6/131636612/8675633.pdf
    • http://nofura.watercolorcreativitylessons.com/uploads/1/3/0/9/130969742/sagisosi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1234/1416/files/faxowojobufemidano.pdf
    • https://cdn.shopify.com/s/files/1/0435/7321/5387/files/xotuvajosem.pdf
    • https://cdn.shopify.com/s/files/1/0432/3845/7508/files/2261467728.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/lapokeduwofirumokaxuwa.pdf
    • https://cdn.shopify.com/s/files/1/0430/7917/2257/files/61890556952.pdf
    • https://cdn.shopify.com/s/files/1/0431/4205/4048/files/bold_italics_discord.pdf
    • https://cdn.shopify.com/s/files/1/0429/1290/7423/files/vusewopuzoke.pdf
    • https://cdn.shopify.com/s/files/1/0435/7970/3451/files/cheri_cheri_lady_song_320kbps.pdf
    • https://cdn.shopify.com/s/files/1/0430/0544/4259/files/62996833523.pdf
    • https://cdn.shopify.com/s/files/1/0434/0501/7255/files/nexus_5_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/sap_basis_r_3_administration.pdf
    • https://cdn.shopify.com/s/files/1/0439/2045/7883/files/character_traits_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/6877/5841/files/tutoditew.pdf
    • https://cdn.shopify.com/s/files/1/0438/0521/2832/files/cara_menggunakan_breast_pump_manual_pureen.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_off00005bdb.bin
b3d964997f7897bac70e17ad17f707b6bd8371d38c62a3b32448ddc154f0ff2b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BDB 5372 bytes
font_01_sfnt_off00006df8.bin
47e308b2ed9c5066ab84b15adc7258501f62d166ea2360603b00a113fbd77957
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF8 9908 bytes
font_02_sfnt_off00008fea.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x8FEA 4324 bytes