Malicious PDF — malware analysis report

Static analysis result for SHA-256 32c0ccab711101b5…

MALICIOUS

PDF

46.9 KB Created: 2020-07-30 22:09:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43709eb3d58f51026c98fa69771f0414 SHA-1: 6f3469a30aec658de5117df22a9b428c9bc6e0fc SHA-256: 32c0ccab711101b5dd4ac45856de8972ef5225bc4cf79382a2263cc7a8fac418
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=tatalaksana+dermatitis+atopik+pdf'. Additionally, another critical heuristic indicates a PDF link farm with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0428/7699/3695/files/19250923015.pdf'. The document body is heavily obfuscated and unreadable, but the presence of these link farms suggests an attempt to drive traffic to malicious or compromised sites.

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.com/pify?keyword=tatalaksana+dermatitis+atopik+pdf
    • http://files.csbridalstudio.com/uploads/1/3/1/3/131398515/75f3986.pdf
    • http://files.thesenseofplace.com/uploads/1/3/1/0/131071145/tesotitikas.pdf
    • http://files.n-cbt.com/uploads/1/3/0/9/130969370/xikerus-kowulab-teweduwagal.pdf
    • http://files.bedfordpsychologists.com/uploads/1/3/1/3/131380175/finejunalezusola.pdf
    • http://files.thesenseofplac
    • https://cdn.shopify.com/s/files/1/0428/7699/3695/files/19250923015.pdf
    • https://cdn.shopify.com/s/files/1/0432/1322/6139/files/jelivulogare.pdf
    • https://cdn.shopify.com/s/files/1/0435/1485/5583/files/94769715175.pdf
    • https://cdn.shopify.com/s/files/1/0429/8476/7641/files/28749489755.pdf
    • https://cdn.shopify.com/s/files/1/0431/6617/1297/files/gosisiroxometakexebi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4017/7317/files/welebisarozerudanarakixir.pdf
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/38314302244.pdf
    • https://cdn.shopify.com/s/files/1/0432/1342/2753/files/zowego.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5612/files/78944968085.pdf
    • https://cdn.shopify.com/s/files/1/0432/2770/9597/files/fagixusodipov.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/92372464773.pdf
    • https://cdn.shopify.com/s/files/1/0440/6607/8870/files/55110541493.pdf
    • https://cdn.shopify.com/s/files/1/0438/3955/3696/files/73062251110.pdf
    • https://cdn.shopify.com/s/files/1/0428/1358/7623/files/18355797118.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_off00007ab8.bin
acbe46d051149f572bfbd9a2b65dcf52d31e15677bc60e8eb5a3434699e82549
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB8 4988 bytes
font_01_sfnt_off00008b8b.bin
3afdcbdf8d1948b65116eb0ca95510cde0fb058df29497a7fa1c9626884ef079
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B8B 10348 bytes