Malicious PDF — malware analysis report

Static analysis result for SHA-256 a28febc268d1681c…

MALICIOUS

PDF

42.4 KB Created: 2020-08-08 12:24:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 432522896806e9c652f43b4951225f74 SHA-1: 815c44bf69f92243172ccd602d15f483e4427d5c SHA-256: a28febc268d1681c8dae99c10eb7232dfa3563093d7a86f7e0e804c5a543e47d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, 'https://ttraff.ru/pify?keyword=autismo+e+asperger+pdf', is identified as a malicious redirector. This suggests the document's purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted from this sample.

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.ru/pify?keyword=autismo+e+asperger+pdf
    • http://vitago.nataliejimenez.com/uploads/1/3/1/0/131070420/dimavegigesu-vizimukax-ranavaror.pdf
    • http://files.downingtownswimacademy.com/uploads/1/3/1/4/131453219/b58539fa67b0289.pdf
    • http://kamuju.cdbua.com/uploads/1/3/2/8/132814930/xaregajure.pdf
    • https://cdn.shopify.com/s/files/1/0428/4104/7206/files/tewobopuduwidowage.pdf
    • https://cdn.shopify.com/s/files/1/0433/0877/7637/files/22959112928.pdf
    • https://cdn.shopify.com/s/files/1/0432/5860/9819/files/36751451767.pdf
    • https://cdn.shopify.com/s/files/1/0430/6193/6285/files/vujenezisenoxadixejomus.pdf
    • https://cdn.shopify.com/s/files/1/0428/3911/3895/files/30302074981.pdf
    • https://cdn.shopify.com/s/files/1/0429/6392/7206/files/php_header_utf_8.pdf
    • https://cdn.shopify.com/s/files/1/0433/1149/7366/files/25951960046.pdf
    • https://cdn.shopify.com/s/files/1/0438/8985/2568/files/greatest_showman_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0431/7285/5957/files/zul_farrak_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/0084/7780/files/how_to_convert_to_word_without_adobe_pro.pdf
    • https://cdn.shopify.com/s/files/1/0437/3626/8949/files/john_deere_gt275_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/5220/3161/files/33160880067.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_off000066da.bin
2fc4e63c3980cb4760074499429bc3de9b2e6420569fe3dd2946725f38664360		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66DA 5320 bytes
font_01_sfnt_off000078db.bin
503ed86e353971d5ac37f4f345bc5f0adc80d0923f6657170c7d88099698be84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78DB 10672 bytes

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