Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ef7831c0b7ff866…

MALICIOUS

PDF

44.1 KB Created: 2020-09-01 19:54:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b272abd9971b34d0e9c178fb4362ee0 SHA-1: e7f8f9b5824c57481a8f2238382d4f63c9f44f62 SHA-256: 1ef7831c0b7ff86613b2e691c4c423efa7662ee488468eb12a6c365e19d22b99
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, pointing to ttraff.com, which is known for malicious redirects. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of embedded links to PDF files hosted on Shopify, suggesting a link farm. The document body contains text related to 'Comune di campoformido discarica orari' and the authoring application 'wkhtmltopdf', which appears to be obfuscated or corrupted text.

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=comune+di+campoformido+discarica+orari
    • https://cdn.shopify.com/s/files/1/0429/6091/2537/files/gejewugosexidovidexudal.pdf
    • https://cdn.shopify.com/s/files/1/0432/2073/0020/files/88969856318.pdf
    • https://cdn.shopify.com/s/files/1/0435/2727/4647/files/platinum_english_textbook_grade_5.pdf
    • https://cdn.shopify.com/s/files/1/0434/2169/6149/files/u660e_transmission.pdf
    • https://cdn.shopify.com/s/files/1/0437/6975/7850/files/beluduzut.pdf
    • https://cdn.shopify.com/s/files/1/0437/3217/2965/files/jimoxoku.pdf
    • https://cdn.shopify.com/s/files/1/0434/9624/3364/files/41665976486.pdf
    • https://cdn.shopify.com/s/files/1/0432/5959/2859/files/as_400_performance_testing.pdf
    • https://cdn.shopify.com/s/files/1/0432/1322/6143/files/25489165940.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6537/files/13652478478.pdf
    • https://cdn.shopify.com/s/files/1/0438/0747/3821/files/bookkeeping_for_dummies_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/5475/9069/files/97484788318.pdf
    • https://cdn.shopify.com/s/files/1/0457/4104/7964/files/runepolefowutidagafidofek.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_off00006cb6.bin
078b9fa7d2204a08f5f87428ab702a286e98cb71dbb7fb11d7ddb5f535ff03a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB6 5172 bytes
font_01_sfnt_off00007e31.bin
e1b2e91bf1bf3ea7511476e3dc5becbf39d38a772b16e7a320702b7054771109		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E31 11540 bytes

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