Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ffa127d4039d786…

MALICIOUS

PDF

48.8 KB Created: 2020-08-29 17:13:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 625cbf5462f96e92766ce2377ec93eb1 SHA-1: d055ed8e2992893a0a814396d2c6ced22da5bad5 SHA-256: 3ffa127d4039d786daafc4b038fede4337ecac93dbff7a039c040cc2ee5202bd
160 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The heuristic 'SE_MFA_LURE' indicates the document is designed to harvest credentials or session tokens, likely by tricking the user into interacting with the malicious link. The presence of a link farm suggests an attempt to broaden reach or improve search engine ranking for malicious content. No scripts were extracted from this sample.

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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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/wix?keyword=priority+pass+form+hdfc
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/diwali_greetings_template_editable.pdf
    • https://cdn.shopify.com/s/files/1/0431/0695/9514/files/29417039371.pdf
    • https://cdn.shopify.com/s/files/1/0435/5863/3631/files/betternet_vpn_for_pc_with_crack.pdf
    • https://cdn.shopify.com/s/files/1/0430/6717/9165/files/libro_el_biocentrismo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1765/8780/files/52250384059.pdf
    • https://cdn.shopify.com/s/files/1/0429/2663/7223/files/16291557180.pdf
    • https://cdn.shopify.com/s/files/1/0432/6794/8708/files/51740114225.pdf
    • https://cdn.shopify.com/s/files/1/0437/4118/4165/files/battlestar_galactica_1978_cast.pdf
    • https://static.usrfiles.com/ugd/b8c837_a23303dda1464c76afcaca4c6ccba19b.pdf
    • https://static.usrfiles.com/ugd/a6e5e9_9312ec2642634e3b92068db3b8f59553.pdf
    • https://static.usrfiles.com/ugd/b8c837_6b6d999c51a34c7996ee9ac66540983d.pdf
    • https://static.usrfiles.com/ugd/b8c837_c4a9303f070e4eaf9df2091cfe583edf.pdf
    • https://cdn.shopify.com/s/files/1/0427/4782/2236/files/pulse_width_modulation_and_demodulation_theory.pdf
    • https://cdn.shopify.com/s/files/1/0432/9881/6160/files/pipodomokiz.pdf
    • https://cdn.shopify.com/s/files/1/0430/1737/1797/files/91769613945.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/2642921463.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/35810014568.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006284.bin
d8f38189b54c480a002bb0c094b34c8d15a86ceea48f87141c31f7f348771f1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6284 5468 bytes
font_01_sfnt_off000074eb.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74EB 1800 bytes
font_02_sfnt_off00007d79.bin
76e671794f3a135bc01baee5eebbf0204065bc98b87cc17db7a77dd271be5c09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D79 10364 bytes
font_03_sfnt_off0000a12e.bin
bb4620ae2308066493f479cb0495314a41e91f5b0bfb2a754d9bad2ef34af03d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA12E 16060 bytes

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