Malicious PDF — malware analysis report

Static analysis result for SHA-256 36dae0b1d2af22c7…

MALICIOUS

PDF

60.8 KB Created: 2020-08-12 12:18:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b9426d5b51daa4b30b2b9036bd6f629 SHA-1: a86207261525c5641321c9eee94e098de46da3ff SHA-256: 36dae0b1d2af22c7ee01b6ac39457bb6739068cd799631bf9a61d88897d53252
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the link at https://ttraff.ru/pify?keyword=livros+para+aprender+frances+pdf points to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic suggests a large number of external links, with the first being https://cdn.shopify.com/s/files/1/0429/0845/0972/files/46049965822.pdf, indicating a potential link farm for SEO manipulation or traffic redirection.

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=livros+para+aprender+frances+pdf
    • http://files.cpcopywriting.co.uk/uploads/1/3/2/7/132740614/3481635.pdf
    • http://files.anchoryourfootprint.com/uploads/1/3/1/4/131438557/2631337.pdf
    • http://guleji.leazahbehrens.com/uploads/1/3/0/8/130874277/fobobojerut.pdf
    • https://cdn.shopify.com/s/files/1/0429/0845/0972/files/46049965822.pdf
    • https://cdn.shopify.com/s/files/1/0431/4320/0929/files/area_and_volume_of_similar_figures.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2294/files/xanifuwu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3798/2869/files/gutunavojorojopatuzazek.pdf
    • https://cdn.shopify.com/s/files/1/0431/7793/5004/files/original_greek_bible_translation_to_english.pdf
    • https://cdn.shopify.com/s/files/1/0431/7403/5607/files/savivime.pdf
    • https://cdn.shopify.com/s/files/1/0436/7423/9129/files/93141309117.pdf
    • https://cdn.shopify.com/s/files/1/0429/7683/7785/files/list_of_auditors_in_chennai.pdf
    • https://cdn.shopify.com/s/files/1/0430/7963/1012/files/6984539838.pdf
    • https://cdn.shopify.com/s/files/1/0432/2816/8359/files/37194486110.pdf
    • https://cdn.shopify.com/s/files/1/0433/4305/2953/files/lumbar_disc_bulge_exercises.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007fe7.bin
f85b6b217f1ce97bd475e7f8fc960cdf2400b9cc7ce024bf6cee3503aaee86e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE7 4824 bytes
font_01_sfnt_off00009054.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9054 1800 bytes
font_02_sfnt_off000098e2.bin
69f63293332e357a98b93d658a3994c3d8b5bb87fdd7a20326cd0d7d458d62cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98E2 12584 bytes
font_03_sfnt_off0000bf55.bin
34a61832f94eee9aa7a9386a157d3359183886a8d6a1dcc3bba3f55b059597fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF55 16448 bytes
font_04_sfnt_off0000d570.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD570 4324 bytes

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