Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1f6aa1ad3366ca1…

MALICIOUS

PDF

48.5 KB Created: 2020-08-30 05:24:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89e7494517844e490cb82762f842a9a5 SHA-1: f99d2b70767c26ec518316b96af892e1ccb45d9e SHA-256: a1f6aa1ad3366ca1cedc5e69ce37cabe3113178acebc84783e3437a869e5f8c0
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The heuristic firings indicate that this is part of a link farm designed to manipulate search engine results or direct users to malicious sites. No scripts were extracted, and the document body is heavily obfuscated, but the presence of numerous links strongly suggests a phishing or redirection attack pattern.

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/wix?keyword=norberto+chaves+la+imagen+corporativa+pdf
    • https://cdn.shopify.com/s/files/1/0438/6501/4432/files/mobile_legends_argus_guide_2018.pdf
    • https://cdn.shopify.com/s/files/1/0429/2182/0326/files/vixaraxupifokejime.pdf
    • https://cdn.shopify.com/s/files/1/0434/6786/6278/files/47870309532.pdf
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/how_to_delete_adobe_account.pdf
    • https://cdn.shopify.com/s/files/1/0428/7001/4111/files/finir.pdf
    • https://static.usrfiles.com/ugd/d5cf39_eae029c93a1447c888913fc86d3dab17.pdf
    • https://static.usrfiles.com/ugd/b8c837_b990027b51764463bd2c0b63f04a42d4.pdf
    • https://static.usrfiles.com/ugd/b8c837_22b63078c113456380a9961e3a46eb28.pdf
    • https://static.usrfiles.com/ugd/97493d_edb2d35b50c64882a20b74a268042add.pdf
    • https://static.usrfiles.com/ugd/493135_eb3c0a88451843b9831287d5b194831b.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/28105612008.pdf
    • https://cdn.shopify.com/s/files/1/0433/5029/4687/files/dutojezerowi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/rujatereboluf.pdf
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/a_letter_to_momo_subtitle_indonesia.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_off00007c0c.bin
5ed79446907af94e6f054d4f23f7a199b208aa91f21cdfce61015096feee7161		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0C 5736 bytes
font_01_sfnt_off00008f77.bin
bcf7f39a4c580826c1885a851242e30643fc2e886e06a83343bafae20aa9ba1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F77 10852 bytes

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