Malicious PDF — malware analysis report

Static analysis result for SHA-256 feabb8e2615dfa46…

MALICIOUS

PDF

45.8 KB Created: 2020-08-11 13:46:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 599aa64c1cf5d1d2ba6e142d9434d96c SHA-1: fb96d9e504d04758cf6fa2b18869f74515d0f0fa SHA-256: feabb8e2615dfa46f0ed3cc9b09dc523877905232afee63b38f297260d245d64
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. Additionally, PDF_SEO_LINK_FARM indicates a large number of external PDF links, likely for SEO manipulation or to host further malicious content. The primary malicious URL identified is https://ttraff.com/wb?keyword=exogenic%20process%20worksheet. The document body contains obfuscated text and embedded URLs, reinforcing the malicious intent.

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/wb?keyword=exogenic%20process%20worksheet
    • http://files.babeliciousandthebeard.com/uploads/1/3/0/8/130814085/4557887.pdf
    • http://files.sylviagborda.com/uploads/1/3/0/7/130775503/xejus-dovasufa-legab.pdf
    • http://jafig.quranandhadith.co.uk/uploads/1/3/2/7/132740978/6e8c56.pdf
    • http://files.modernvintage20.com/uploads/1/3/1/3/131384771/gapivirup.pdf
    • http://files.kafyeblaan.com/uploads/1/3/1/8/131856381/becb5.pdf
    • https://cdn.shopify.com/s/files/1/0440/7748/2136/files/carica_papaya_leaf_extract.pdf
    • https://cdn.shopify.com/s/files/1/0435/0178/1156/files/61855142582.pdf
    • https://cdn.shopify.com/s/files/1/0434/1904/1954/files/java_string_interview_questions.pdf
    • https://cdn.shopify.com/s/files/1/0428/9619/5737/files/30251082680.pdf
    • https://cdn.shopify.com/s/files/1/0440/9910/9016/files/gre_coordinate_geometry_practice_questions.pdf
    • https://cdn.shopify.com/s/files/1/0429/8165/4679/files/blanche_neige_rsum.pdf
    • https://cdn.shopify.com/s/files/1/0430/8742/9785/files/riesgos_psicosociales.pdf
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/pavofidup.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zonamanasalusowalu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8679/0304/files/80218923147.pdf
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/carpetbaggers_and_scalawags.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_off00007486.bin
e5f1b0505993731e9fb377893309cc6bb1e7d4da9c24e9f4b384b24f0e54dc47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7486 5132 bytes
font_01_sfnt_off0000861e.bin
c66980b0b48eb737e243f6d8262de5cc060812d5bb589176afd741adf7f31bc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x861E 10692 bytes

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