Malicious PDF — malware analysis report

Static analysis result for SHA-256 e518778709ca8b66…

MALICIOUS

PDF

45.9 KB Created: 2020-08-20 14:00:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99dace1eccf59f6b56d4d2de6bbcf16b SHA-1: 930f0184fb899bce16af59467870b672f021ac09 SHA-256: e518778709ca8b668d143f0dd89ad081ac648711c87213c592241e47c4d5b8aa
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) known for malicious activity. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=project+feasibility+report+example, suggesting a lure to a malicious site. The presence of a PDF_SEO_LINK_FARM heuristic further indicates an attempt to distribute malicious links.

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.cc/pify?keyword=project+feasibility+report+example
    • http://jajosinev.americanmelodrama.com/uploads/1/3/1/1/131164250/migipiripuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0582/8520/files/buku_akuntansi_perbankan.pdf
    • https://cdn.shopify.com/s/files/1/0437/4223/2725/files/kiwujavapoxuvo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6420/5216/files/going_to_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0440/0440/9494/files/cartina_geografica_trentino_alto_adige.pdf
    • https://cdn.shopify.com/s/files/1/0432/8967/3883/files/7571041980.pdf
    • https://cdn.shopify.com/s/files/1/0429/3863/0300/files/18568829123.pdf
    • https://cdn.shopify.com/s/files/1/0433/9875/8557/files/kupesobusodiwanojuk.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9909/files/chandni_bar_full_movie_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/solja_boy_report_card.pdf
    • https://cdn.shopify.com/s/files/1/0448/3540/5985/files/dr_berg_ovary_body_type.pdf
    • https://cdn.shopify.com/s/files/1/0438/3460/5728/files/22112770929.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_off000074f0.bin
de9bd4bee21a871d8114a470153016e580ffe9d447e373443216cabcbe1675f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74F0 5548 bytes
font_01_sfnt_off000087c9.bin
88f7b37804ac5084112ac174e9dcffc5cf150ba7b798f825ac3c1acfe5f4bbb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87C9 10224 bytes

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