Malicious PDF — malware analysis report

Static analysis result for SHA-256 444ef1fad81208b4…

MALICIOUS

PDF

41.7 KB Created: 2020-08-25 00:11:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01694ea93a9db34b81d73e84bf237209 SHA-1: e450ef69c2ad9a77e6ae47f24f36be665de32ad0 SHA-256: 444ef1fad81208b4027ca4634a4efa63d47a0bd37b9173a81f73a137589f3794
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=lovely+telugu+movie+audio+songs+free'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, one of which is 'https://cdn.shopify.com/s/files/1/0430/9581/8397/files/82721984071.pdf'. The presence of a 'download button' heuristic further suggests a social engineering lure. The document body, though heavily obfuscated, contains references to these URLs, reinforcing the malicious intent.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=lovely+telugu+movie+audio+songs+free
    • http://sineb.manhattansportsacupuncture.com/uploads/1/3/2/6/132681947/d0778e55e82cc3.pdf
    • http://files.haydenbrowne.com/uploads/1/3/1/4/131453402/jaridakopagoni_taxiwolifok.pdf
    • http://files.stmarymagdalenewpg.org/uploads/1/3/1/8/131856531/badifa.pdf
    • https://cdn.shopify.com/s/files/1/0430/9581/8397/files/82721984071.pdf
    • https://cdn.shopify.com/s/files/1/0465/4769/7814/files/berutixomamaputibowos.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1713/files/64371045837.pdf
    • https://cdn.shopify.com/s/files/1/0440/9065/4885/files/swimming_merit_badge_worksheet_2018.pdf
    • https://cdn.shopify.com/s/files/1/0431/1947/6896/files/clothing_company_profile.pdf
    • https://cdn.shopify.com/s/files/1/0438/2516/8544/files/nomepadewon.pdf
    • https://cdn.shopify.com/s/files/1/0430/2739/8807/files/walden_two_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0412/4580/files/wewakewog.pdf
    • https://cdn.shopify.com/s/files/1/0431/6794/0759/files/heaven_s_feel_route_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/nosuw.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/tutosajapavitos.pdf
    • https://cdn.shopify.com/s/files/1/0434/1796/0600/files/amish_tripathi_sita_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/2646/3385/files/60241673037.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_off0000595d.bin
f12ba6b335b80b9d13312a3036672d486804edd0ce31dc692404557358be6018		 pdf-font-stream PDF embedded font (sfnt) at offset 0x595D 5332 bytes
font_01_sfnt_off00006b80.bin
a5864877ab6a9feefdf24eeecba24eb96e1c651075bb186f80831318e50c0ca4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B80 2028 bytes
font_02_sfnt_off00007549.bin
1da1a28ab2a7d51ecb66fe2bd75e9882e2373f68716a3a6b3e93fdc0007698f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7549 10696 bytes

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