Malicious PDF — malware analysis report

Static analysis result for SHA-256 58dea3da55b66d55…

MALICIOUS

PDF

40.5 KB Created: 2020-08-06 18:07:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0b2242c836d857b1b53deefef0c8f12 SHA-1: f0ee6636423d217c5ee233e134e0529ab63fec57 SHA-256: 58dea3da55b66d55b5eefce60f8dcc249176438f1f8843df234731db1f1f2f95
152 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=bad+blood+secrets+pdf', suggesting a lure to a malicious site. The presence of numerous Shopify-hosted PDF links further indicates an attempt to disguise malicious activity within a seemingly legitimate context.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=bad+blood+secrets+pdf
    • http://files.lyricmgmt.com/uploads/1/3/1/8/131856907/31773b57.pdf
    • http://files.galwayhairandlashco.com/uploads/1/3/2/6/132682723/lufeloretejuso-girozipepe-bajodaxos-nokopi.pdf
    • http://files.pjeterkoleci.com/uploads/1/3/2/6/132681938/f414f68e3faf.pdf
    • https://cdn.shopify.com/s/files/1/0437/2021/2645/files/65865337515.pdf
    • https://cdn.shopify.com/s/files/1/0435/4375/6954/files/disagepeturaloma.pdf
    • https://cdn.shopify.com/s/files/1/0437/2591/4277/files/54950610685.pdf
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/random_lines_of_code.pdf
    • https://cdn.shopify.com/s/files/1/0431/4995/1138/files/nenotiraladuguluxivax.pdf
    • https://cdn.shopify.com/s/files/1/0431/0574/7095/files/76227250272.pdf
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/16425929506.pdf
    • https://cdn.shopify.com/s/files/1/0433/3908/8022/files/ap_biology_textbook_campbell_9th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0435/5430/8245/files/homelite_xl_chainsaw_manual.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_off0000601f.bin
2ccaf04d7ca0b578b2e29e7c80cf6e437ab590adb531bef1812c380047174bd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x601F 5336 bytes
font_01_sfnt_off0000724c.bin
d3a35f1c98a1618f6036e94a15db6472dc0a2a68540b705e4865eb350bc8f215		 pdf-font-stream PDF embedded font (sfnt) at offset 0x724C 10336 bytes

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