Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b9c0adf53bfbabc…

MALICIOUS

PDF

45.1 KB Created: 2020-09-08 01:41:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e5deb764b1ca9969f91779d8b001af9 SHA-1: c90de503dd8388d51fed26b836e7ef09d1e8b7d9 SHA-256: 1b9c0adf53bfbabcab1e7f6d0f4efd98d7e8e7f9e1904a9f310bde17f4c2e5be
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL that leads to the malicious redirector. This suggests a phishing or scam attempt designed to redirect users to malicious content.

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.me/wix?keyword=catholic+magisterium+pdf
    • https://cdn.shopify.com/s/files/1/0431/1898/5370/files/dienes_blocks_addition_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0464/7357/6616/files/tatimejijevanotilupi.pdf
    • https://cdn.shopify.com/s/files/1/0437/7142/9021/files/63999889319.pdf
    • https://cdn.shopify.com/s/files/1/0433/8371/8042/files/nituxetapukona.pdf
    • https://cdn.shopify.com/s/files/1/0459/5659/5871/files/a_level_economics_notes.pdf
    • https://cdn.shopify.com/s/files/1/0460/4008/8740/files/37359901636.pdf
    • https://cdn.shopify.com/s/files/1/0437/7752/3861/files/angular_7_formcontrol_custom_validator.pdf
    • https://cdn.shopify.com/s/files/1/0428/0628/0355/files/budozupizusirukorapig.pdf
    • https://cdn.shopify.com/s/files/1/0438/2051/5488/files/61450832135.pdf
    • https://cdn.shopify.com/s/files/1/0429/5534/1977/files/bondstrand_7000m.pdf
    • https://cdn.shopify.com/s/files/1/0435/9074/6271/files/core_java_programming_exercises.pdf
    • https://static.usrfiles.com/ugd/2e16aa_0ebc17b3863e42d79a5cfade4b94c920.pdf
    • https://static.usrfiles.com/ugd/f99735_590fb9546d934991b08d22abf11a683e.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_off000072a4.bin
d509e2bf1b4077ff17052a7f321d76be2644586f33187ecaddf48143ff6f4992		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72A4 5476 bytes
font_01_sfnt_off00008514.bin
241d5e256d8fc46db738995b96ba6aa1ca72f83966dd87ef1599f5ed56419a61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8514 10196 bytes

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