Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e09429be3e4aa4b…

MALICIOUS

PDF

47.1 KB Created: 2020-08-31 09:39:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f354f5bc0f0f360c02ff3d681a2041b SHA-1: 6c6f24ad22faf1dfbdd9bbb3d182ed1559c1db1e SHA-256: 1e09429be3e4aa4bceb3ac0db345171f075451d472e8b9173b627ad93a341ebf
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The heuristic 'SE_INVOICE_LURE' suggests the document's content is designed to trick the user into clicking the malicious link, likely for a phishing or scam attempt. The primary malicious IOC is the redirector URL.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=simple+online+accounting+for+small+b
    • https://static.usrfiles.com/ugd/704566_dcf1de7adb0742949781d942821cbbc1.pdf
    • https://static.usrfiles.com/ugd/fd3290_f117389a14414400b8a2ec336885edf9.pdf
    • https://static.usrfiles.com/ugd/72b0e7_ceedc7d8370a428b902b3877802dcf16.pdf
    • https://static.usrfiles.com/ugd/b8c837_f6bbdb41acef4acc80fa663ea4177519.pdf
    • https://static.usrfiles.com/ugd/24853a_bcbe8dd8d02d472db6e552f5ccfeb424.pdf
    • https://cdn.shopify.com/s/files/1/0437/2057/3080/files/vomuxajasinekabelakododo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4956/5853/files/capitalismo_informacional.pdf
    • https://cdn.shopify.com/s/files/1/0433/5819/1768/files/lenuwerijofoxakusokexa.pdf
    • https://cdn.shopify.com/s/files/1/0433/3089/6026/files/dq11_metal_slime_farming.pdf
    • https://static.usrfiles.com/ugd/ace02d_e25e0ee7b84043dbb34a1382bbdf44cf.pdf
    • https://static.usrfiles.com/ugd/ac51ce_1965071628544242a51dc360a80bb255.pdf
    • https://cdn.shopify.com/s/files/1/0437/4387/1127/files/job_acceptance_letter.pdf
    • https://cdn.shopify.com/s/files/1/0432/6863/6834/files/54391835155.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2675/files/schaum_s_outline_of_differential_equations.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_off000079d7.bin
4d1495080356134eccdcdf15adcc94cc792fea27015b505c13af702bbe352704		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79D7 5580 bytes
font_01_sfnt_off00008cb0.bin
644d73098b31e9f547cffd9411839d03a401757bf411b46aab05d2308d7e6896		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB0 10144 bytes

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