Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5bdcee02f028d6d…

MALICIOUS

PDF

43.4 KB Created: 2020-08-15 00:33:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e59f532ac3198dda7c985cec631cf0e SHA-1: 60ed8a03ae2689da67f4b916f47f7902d8bb4e05 SHA-256: b5bdcee02f028d6d4e2efcee0b90ffba44b6c1d01a13374ebc7f95b3ea2904d7
120 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.cc/pify?keyword=biogas+benefits+pdf'. Another critical heuristic identified a PDF link farm, suggesting an attempt to distribute malicious content or engage in SEO manipulation. The document body, though heavily obfuscated, contains the same redirector URL and references to PDF files, reinforcing the lure.

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=biogas+benefits+pdf
    • http://jufip.knowlebadminton.com/uploads/1/3/1/4/131437987/0b97a97ab87.pdf
    • https://cdn.shopify.com/s/files/1/0434/7405/9424/files/65640420298.pdf
    • https://cdn.shopify.com/s/files/1/0428/6247/7479/files/13966849133.pdf
    • https://cdn.shopify.com/s/files/1/0428/5943/0054/files/problems_of_bureaucracy_in_pakistan.pdf
    • https://cdn.shopify.com/s/files/1/0437/6176/2455/files/wemetanogaxajifebuvarozuz.pdf
    • https://cdn.shopify.com/s/files/1/0434/1897/6408/files/nopesedelazexetebijuzura.pdf
    • https://cdn.shopify.com/s/files/1/0433/4203/7150/files/59144237688.pdf
    • https://cdn.shopify.com/s/files/1/0428/5713/6294/files/komigixadibol.pdf
    • https://cdn.shopify.com/s/files/1/0437/8827/1773/files/mathematics_books_for_class_7.pdf
    • https://cdn.shopify.com/s/files/1/0435/1570/7551/files/sanemupinevefotibeg.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/abc_of_cbc_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0441/1867/1512/files/piano_beginners_songbook.pdf
    • https://cdn.shopify.com/s/files/1/0429/2290/1663/files/monogame_content_pipeline.pdf
    • https://cdn.shopify.com/s/files/1/0444/2200/4903/files/lecture_notes_on_calculus_of_variations.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_off00006bd3.bin
47977419ce08dd523f014da3da7c63076473456e327b8615989ea4c9c5e1e716		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD3 5268 bytes
font_01_sfnt_off00007dcd.bin
da7675186e9b2d11d1905283378f530ea5761ef10884acdb812899372a194be3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DCD 10352 bytes

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