Malicious PDF — malware analysis report

Static analysis result for SHA-256 9903e2c1af9bc7f8…

MALICIOUS

PDF

43.6 KB Created: 2020-08-23 08:30:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 967775c5d43af7fe79a0d7b1ab00f00d SHA-1: b708ef4814eae6ebca5914e03432ce3ac743a07f SHA-256: 9903e2c1af9bc7f8175a243d4cc287e05d0e7856cb18306168968bf1961b9dad
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a redirector link to 'ttraff.cc'. This suggests the document is designed to lure users to malicious infrastructure. The presence of many links, including to Shopify domains, points towards an attempt to create a link farm for SEO poisoning or to obscure the final malicious destination. No scripts were extracted from this sample.

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=concepto+de+certificacion+de+calidad+pdf
    • http://files.abileneptsportsrehab.com/uploads/1/3/0/8/130874583/d1d2b52cd742ee.pdf
    • http://files.yttjourney.com/uploads/1/3/0/7/130776714/pujeziwutodiji.pdf
    • http://files.sangresbestbeef.com/uploads/1/3/1/4/131437987/zuwefatag.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/8596567396.pdf
    • https://cdn.shopify.com/s/files/1/0429/0609/1673/files/write_a_program.pdf
    • https://cdn.shopify.com/s/files/1/0433/3223/9528/files/68275549368.pdf
    • https://cdn.shopify.com/s/files/1/0434/3313/2184/files/33675244790.pdf
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/zawoson.pdf
    • https://cdn.shopify.com/s/files/1/0437/5543/8234/files/mobesibudakobek.pdf
    • https://cdn.shopify.com/s/files/1/0429/6258/3711/files/milupanikoxopoxisabolup.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/89077698164.pdf
    • https://cdn.shopify.com/s/files/1/0430/9932/4580/files/91364083267.pdf
    • https://cdn.shopify.com/s/files/1/0431/5948/6626/files/damareju.pdf
    • https://cdn.shopify.com/s/files/1/0432/6588/4323/files/darug.pdf
    • https://cdn.shopify.com/s/files/1/0437/7231/3749/files/goroxiloxipapomuzun.pdf
    • https://cdn.shopify.com/s/files/1/0434/3519/6566/files/18647102495.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_off000068db.bin
87667b4d0af5f6ffac8249feba880f5dca6e631840f735b1f8ca5f13ec13cfef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68DB 4876 bytes
font_01_sfnt_off00007977.bin
1428251b96027a8b6f914b07b5b2cfdfb713552a5a14f2723678e04c25dafce7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7977 11692 bytes

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