Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fff5e73cde2c039…

MALICIOUS

PDF

38.5 KB Created: 2020-07-31 12:51:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59997d4151db0f2333de1e42678fba2d SHA-1: 99eb2e17b67bb9231e37e6e39a1827cc6385a494 SHA-256: 3fff5e73cde2c039f6cb8e900544530fe9794d887a5a1e85b50f75f719dca639
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/pify?keyword=code+128+generator+pdf'. Another critical heuristic indicates a PDF link farm, with 'https://cdn.shopify.com/s/files/1/0430/4538/8437/files/40657063839.pdf' being one of many such links. The document body, though heavily obfuscated, contains text related to 'Code 128 generator pdf', suggesting a lure to disguise 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/pify?keyword=code+128+generator+pdf
    • http://files.iamlovedministry.com/uploads/1/3/1/8/131856288/mumono.pdf
    • http://files.thehigginsreport.com/uploads/1/3/0/7/130775750/jeruzenabadimo_dubil.pdf
    • http://files.satphones.com/uploads/1/3/1/6/131637658/6932170.pdf
    • http://files.thehigginsreport.com/uploads/1/3/0/7/130775750/jeruzenabadimo
    • https://cdn.shopify.com/s/files/1/0430/4538/8437/files/40657063839.pdf
    • https://cdn.shopify.com/s/files/1/0432/9753/8203/files/66088913464.pdf
    • https://cdn.shopify.com/s/files/1/0437/7752/3873/files/94316617183.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/dupapowupoteg.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/ketozizaj.pdf
    • https://cdn.shopify.com/s/files/1/0439/3949/6094/files/rikebo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6659/7288/files/zezoxelafa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baxumedufimoval.pdf
    • https://cdn.shopify.com/s/files/1/0431/2599/7722/files/12173610211.pdf
    • https://cdn.shopify.com/s/files/1/0432/2518/6466/files/govowipurise.pdf
    • https://cdn.shopify.com/s/files/1/0430/6406/6209/files/nobavabibemitipokawufima.pdf
    • https://cdn.shopify.com/s/files/1/0431/7098/8188/files/5757300648.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_off0000596b.bin
ac9da686196bf9f8a779dd765b73063fafabea697ace5d6309fdac641328e9c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x596B 5140 bytes
font_01_sfnt_off00006af6.bin
7d4f9a7714290efb45300a51e84e1bd12c07d91d8e4b5aef04bc2d978b2ad886		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF6 10000 bytes

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