Malicious PDF — malware analysis report

Static analysis result for SHA-256 45848dd007220f86…

MALICIOUS

PDF

50.4 KB Created: 2020-07-10 02:48:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f65ab2fbc73a0ca232dc0d75a83371d SHA-1: b0d895d92c153f32d1dbb7b3ea4e4d1a1e73c99b SHA-256: 45848dd007220f869b8d81668592c4100d5d0ec7be08b2497cea51c413f9c757
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to SEO-optimized PDF files hosted on various domains. One prominent link redirects to 'ttraff.ru', a known malicious redirector. This suggests the document is part of an SEO spam campaign designed to drive traffic to malicious sites, potentially for phishing or malware distribution. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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/wb?keyword=harmonielehre%20piano%20pdf
    • http://files.frosttechlab.com/uploads/1/3/1/6/131637841/riwodiju-sopup-sefojoweg-gajajipiva.pdf
    • http://files.avanvive.com/uploads/1/3/0/8/130815093/2536565.pdf
    • http://files.caregiverinspirations.com/uploads/1/3/0/9/130969381/1589048.pdf
    • http://files.termarkleather.com/uploads/1/3/2/6/132682665/85b01c3aa355523.pdf
    • http://files.worldmusicpedagogy.com/uploads/1/3/1/4/131453526/2251174.pdf
    • http://files.louisvilleccc.org/uploads/1/3/0/8/130813897/c2e86b82384c2.pdf
    • http://files.chesapeakewoodartisans.com/uploads/1/3/2/7/132740779/ronog.pdf
    • http://files.iosociety.org/uploads/1/3/0/8/130814120/2351562.pdf
    • http://files.susiestewartportfolio.com/uploads/1/3/2/6/132682565/2332276.pdf
    • http://files.b-wellnow.net/uploads/1/3/1/6/131606335/padadominavilokitewa.pdf
    • http://files.mitchadvent.com/uploads/1/3/1/4/131438099/3003701.pdf
    • https://lovugamu.files.wordpress.com/2020/06/vemosezarimiramek.pdf
    • https://samizoz.files.wordpress.com/2020/07/bogebonilemavoxotefiveg.pdf
    • https://kogovabazoro.files.wordpress.com/2020/06/vafibalum.pdf
    • https://mebanome.files.wordpress.com/2020/06/48788932042.pdf
    • https://xoxabolagiw.files.wordpress.com/2020/07/wamebo.pdf
    • https://zobekak.files.wordpress.com/2020/06/33300773002.pdf
    • https://dezulav.files.wordpress.com/2020/07/vidatipuvoredam.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/47948794002.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tefukina.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xizujebekox.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovaje.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wonazonuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fadanamimurusekebunom.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lalosukiwafigoledexefes.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_off00007444.bin
10733c8d9a5e1b64729399a5163452a4999b3398f58ae446ce8a6dbe3f59aa40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7444 4772 bytes
font_01_sfnt_off00008437.bin
84da416fcbb05ac94b97f2425ba3a3cd4af2b4989ba0bee2ece124684bd27d7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8437 10036 bytes
font_02_sfnt_off0000a6d1.bin
2cfc97915d250804213c9b0e6ad261e0979cd38371fb36ec9174dea58a153a3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6D1 16120 bytes

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