Malicious PDF — malware analysis report

Static analysis result for SHA-256 1df099d214e9b678…

MALICIOUS

PDF

39.7 KB Created: 2020-08-30 19:45:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6441d8f479cd43742522057c78177456 SHA-1: 161bc8b81dd028390ea7337a0d5854f2ccafb2ca SHA-256: 1df099d214e9b678b758e9a6e4fe43a193390368b63f25a0c1551a78e365e03d
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically targeting searches related to 'google sheets average if not blank'. The primary malicious URL is https://ttraff.com/wix?keyword=google+sheets+average+if+not+blank. This indicates a phishing or scam attempt leveraging SEO techniques to distribute malicious content. No scripts were extracted, but the PDF structure and embedded links strongly suggest a social engineering attack.

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.com/wix?keyword=google+sheets+average+if+not+blank
    • https://cdn.shopify.com/s/files/1/0431/3907/2161/files/ropomutupurow.pdf
    • https://cdn.shopify.com/s/files/1/0434/7982/6582/files/wixesu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/basic_english_words_list.pdf
    • https://cdn.shopify.com/s/files/1/0430/9254/1589/files/zidomuduxil.pdf
    • https://cdn.shopify.com/s/files/1/0437/3194/3585/files/latasodewugasibapaxin.pdf
    • https://cdn.shopify.com/s/files/1/0463/0960/5541/files/polis_akademisi_1_full_izle_trke_dublaj.pdf
    • https://cdn.shopify.com/s/files/1/0435/0086/3640/files/crystal_report_for_visual_studio_2017_c.pdf
    • https://static.usrfiles.com/ugd/b8c837_aa2cf6b96ada42b1abdcefda0868898e.pdf
    • https://static.usrfiles.com/ugd/b8c837_126fc4e8036b4a018433c4911e9352bf.pdf
    • https://static.usrfiles.com/ugd/eaf48f_600a586820fd4d30b8def14d8ab1583b.pdf
    • https://static.usrfiles.com/ugd/76de1a_9f01de7cfa2449c4beea0b1b6174a526.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_off00005c40.bin
79b344e888b8be4936b176933a4b889566c210ac509f22a43458ec96655d6925		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C40 5324 bytes
font_01_sfnt_off00006e6d.bin
f1892da6c03561c205448349b5675838ed4eb703127a5945e934c337c5a99ebb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E6D 10736 bytes

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