Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0d37c1709c2a22e…

MALICIOUS

PDF

41.0 KB Created: 2020-09-06 08:53:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b821903a2e0a1f2a9ba1051440c80281 SHA-1: 7cd1d9a37fb5c6f7d840b81544147f011de02637 SHA-256: d0d37c1709c2a22e501634bb0d73f821f0793d3642488fc6eb9e9e96be717efa
162 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.club/pify?keyword=bandicam++for+mac In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/1acd69_fdc32018a85042b3bac847595735c923.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c0fca2_5eaed7f4d47a4b0c9fcdb54c85bbabec.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/432b07_587b0b8fdb1c432aa024e2bf6f20cdb8.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_1b2801f4ef954e06afde1a49b0f6e3d3.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b91566_3401996ac31540d6a6d0509c90aeeba7.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a8cc01_33b842c8783642be9089be3cad353976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7982/6582/files/71059459421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1307/8168/files/mupemokemizoderasabipukif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9197/4549/files/hitler_kavgam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/0156/0478/files/pavuguvulubotoxaxafida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6423/9014/files/din_en_iso_4287.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2e16aa_4b20904a78d347a982a5a6c4c773e1b5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d2751c_a69026238ad04696bfab498c7db889d7.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/111c46_ca17f87c235944488d2ed5929e4ae74a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_c23f1188a5154b8980cb8176da2cb52b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9ff9b8_23f3b20ec8a74a96995ebab1081a102c.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006366.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6366 5008 bytes
SHA-256: 84d443cb6c40450ec832bdb493ac701d33e2123c59d0a2ef3da901e8a59cc77c
font_01_sfnt_off0000745d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x745D 10204 bytes
SHA-256: 8aee02260b53925890e34d080f595b72c89ac768bf19ef96db12d3dc29e696b0

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