Malicious PDF — malware analysis report

Static analysis result for SHA-256 49ed753af78b91cd…

MALICIOUS

PDF

44.0 KB Created: 2020-08-05 00:59:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d7a69f05c2e41c8625ef571e6c49904 SHA-1: d9c0645fbeb943f401b44fd9d8f8b4159f9ee05d SHA-256: 49ed753af78b91cdd3205297f547f4efc9f659ccfb9b47628f96c6d284c21aca
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one heuristic specifically identifying a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=berliner+platz+1+test+pdf', which is likely intended to lure the user to a malicious site. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content broadly.

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.cc/pify?keyword=berliner+platz+1+test+pdf
    • http://files.coast-architects.com/uploads/1/3/2/7/132712306/bamunavuwabuf.pdf
    • http://files.tmvideoproductions.com/uploads/1/3/0/7/130740191/dijezanuvopudo_fagewivujikek_venetobuwi_kalekir.pdf
    • http://files.its-our-mission-period.org/uploads/1/3/0/7/130739831/fukekewatidoton.pdf
    • http://files.berhane-yesus.info/uploads/1/3/0/7/130739363/pafitalemedibediva.pdf
    • https://cdn.shopify.com/s/files/1/0438/0141/1744/files/lozelekosonisitov.pdf
    • https://cdn.shopify.com/s/files/1/0433/3977/6159/files/93518940841.pdf
    • https://cdn.shopify.com/s/files/1/0434/5639/7464/files/xulomigozunixijedewaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/2908/5859/files/29838006993.pdf
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/75945874078.pdf
    • https://cdn.shopify.com/s/files/1/0428/5654/6467/files/56873725566.pdf
    • https://cdn.shopify.com/s/files/1/0434/4266/7676/files/4840588556.pdf
    • https://cdn.shopify.com/s/files/1/0429/3695/9139/files/67361617104.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6857/files/57702061793.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/kukizi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9302/5183/files/namonufor.pdf
    • https://cdn.shopify.com/s/files/1/0432/0421/4942/files/nejixi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2666/1023/files/utorrent_cannot_find_path.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_off00006572.bin
ad09b5ad315140db93980e4c312d1cb97983ea99f07f5288dc86b17cc91c59fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6572 5184 bytes
font_01_sfnt_off00007731.bin
a05e7f7be702aa03579e098521a4d2fcd2a5f9c196e8f7b5ea33a35cb43def88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7731 13764 bytes

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