Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc4f65a79f247bab…

MALICIOUS

PDF

77.8 KB Created: 2020-08-11 14:06:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ae3a0cc0b24bae64051e03443b56a47 SHA-1: b928e4ce5e5f7a3d9d863a1e2fb0e9ae3050ad63 SHA-256: fc4f65a79f247babf06be870968b13d4ce3fd60dec9f4937193503d862b963c4
128 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. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=argala+stotram+pdf+in+tamil', which is flagged as malicious. Another heuristic indicates a link farm structure, suggesting an attempt to distribute or obscure malicious content. The presence of a 'download button' heuristic further supports a lure-based attack pattern.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=argala+stotram+pdf+in+tamil
    • http://files.artoftherush.com/uploads/1/3/2/3/132303264/losagen.pdf
    • http://files.johnwesthaver.com/uploads/1/3/0/8/130874382/fogajajuxapenem_loxafineru_depuda_samitokukifowu.pdf
    • http://fipuxu.adamsbrownmobility.com/uploads/1/3/1/4/131437130/sibunu-tatijami-lesojasolato-muxawefe.pdf
    • https://cdn.shopify.com/s/files/1/0435/5801/1035/files/luwuvenamikezu.pdf
    • https://cdn.shopify.com/s/files/1/0441/2683/0744/files/world_execute_me.pdf
    • https://cdn.shopify.com/s/files/1/0434/1379/9066/files/mean_deviation_for_grouped_data.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9432/files/50698104909.pdf
    • https://cdn.shopify.com/s/files/1/0433/5340/7646/files/nemusame.pdf
    • https://cdn.shopify.com/s/files/1/0431/7868/8674/files/76029062484.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lewajoranuputefikilos.pdf
    • https://cdn.shopify.com/s/files/1/0439/4686/8891/files/vituzeragojulovojemur.pdf
    • https://cdn.shopify.com/s/files/1/0429/1998/5319/files/16111611879.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65760981278.pdf
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/bawuzijivovofakeb.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0000f533.bin
1f56c3992c6d5675ab3292a4f7fe16db3dc34f839170603b4d9064350fe233ca		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xF533 17264 bytes
font_00_sfnt_off0000928a.bin
01ae7506a38765deb4ea97b6a532fe230d9844abf09ad0f7e6af0f7f799b2d76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x928A 5348 bytes
font_01_sfnt_off0000a49d.bin
b5d74f2c892d0e428548e424a441d774a4977bfa42705f7182843ff8560b2e70		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA49D 13012 bytes
font_02_sfnt_off0000c46c.bin
b850e935aaf604f3e1824861b6c46746957ce6d0e1401f4bf16d070b42224529		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC46C 3772 bytes
font_03_sfnt_off0000d010.bin
518c6ddff1da0b0e47bda2d34ba98f885662283e6930d81e4e3cea3cdc06e54f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD010 11784 bytes

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