Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aee8c1d748e9e64…

MALICIOUS

PDF

57.3 KB Created: 2020-08-11 20:46:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c34335b28f146adccd2f7cc38583659e SHA-1: e4e39f4ab691b75f506284cf7240b4ead76b5aa0 SHA-256: 4aee8c1d748e9e64dd9d5a5ff2438ead7bf5bab47b1aee01265302886edf4b4a
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell 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=ramadan+calendar+2020+durban+pdf'. This URL is likely used to redirect the user to a malicious site for phishing or further payload delivery. The document body, though heavily obfuscated, contains text related to a 'Ramadan calendar 2020 durban pdf', suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=ramadan+calendar+2020+durban+pdf
    • http://files.mscg19.com/uploads/1/3/0/7/130740624/labizegirijen_konora_lasijuzopaki_tinobuga.pdf
    • http://files.buyportlandstores.com/uploads/1/3/2/7/132712334/dddb736d3.pdf
    • http://files.cocoamoy.co.uk/uploads/1/3/0/7/130776611/dewumuwesolok.pdf
    • https://cdn.shopify.com/s/files/1/0429/9898/8949/files/94792343472.pdf
    • https://cdn.shopify.com/s/files/1/0433/7637/8014/files/sonufobowobenefap.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/tolabigepikuniga.pdf
    • https://cdn.shopify.com/s/files/1/0438/6678/3899/files/leriposavetufiwi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6718/6079/files/separate_peace.pdf
    • https://cdn.shopify.com/s/files/1/0430/2805/4169/files/wumurixureno.pdf
    • https://cdn.shopify.com/s/files/1/0434/8307/0630/files/material_ui_appbar.pdf
    • https://cdn.shopify.com/s/files/1/0433/9898/7941/files/83432048022.pdf
    • https://cdn.shopify.com/s/files/1/0432/7977/7952/files/41783585152.pdf
    • https://cdn.shopify.com/s/files/1/0430/8962/5241/files/numazageka.pdf
    • https://cdn.shopify.com/s/files/1/0429/5219/6249/files/80891523986.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000a9a3.bin
2c5c04f8e36db6e758472203c3c7ebf4b95646ad059116e633a0a83aeee2b688		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA9A3 19680 bytes
font_00_sfnt_off00007584.bin
cc2a80a49c0709e63aa6f8f1c0d51b270cb15833230ec090f22ac5827616eb32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7584 5188 bytes
font_01_sfnt_off000086fe.bin
c2359a0c924ba0bd9367b32f559668319fbdd7185cfe3be07535d3b343cdd9e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86FE 10088 bytes
font_03_sfnt_off0000c9e1.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC9E1 4324 bytes

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