Malicious PDF — malware analysis report

Static analysis result for SHA-256 79d1a14199f4fa50…

MALICIOUS

PDF

70.2 KB Created: 2020-09-01 11:07:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c7314fb51ed4f1c407d699c284ff024 SHA-1: 76be8afd5f713eb689d5f400a88b98c804ffb91f SHA-256: 79d1a14199f4fa507b25be086758cf0e239f94ae867f666b3ff100b93b1db96f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'bollywood movies' and the malicious URL, suggesting a lure for free movie downloads. The presence of a malicious redirector indicates an attempt to lead the user to a compromised or malicious site.

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/wix?keyword=all+bollywood+movies+2016+free
    • https://cdn.shopify.com/s/files/1/0432/5860/9819/files/bujudotivejozezejudaxedet.pdf
    • https://cdn.shopify.com/s/files/1/0435/1043/1896/files/69377825787.pdf
    • https://cdn.shopify.com/s/files/1/0434/9463/7734/files/boiling_point_elevation_and_freezing_point_depression.pdf
    • https://cdn.shopify.com/s/files/1/0433/5819/1768/files/zakonemoxaxoxugesejisugop.pdf
    • https://static.usrfiles.com/ugd/253000_b296af930a9c4ecfbf40f7902d251f01.pdf
    • https://static.usrfiles.com/ugd/cf14a4_caca8ff4e83f445c8e34eabd7b540591.pdf
    • https://static.usrfiles.com/ugd/e02969_a7b5765b529749959c8c7a6e146e2000.pdf
    • https://cdn.shopify.com/s/files/1/0436/7548/4313/files/dezafokiwop.pdf
    • https://cdn.shopify.com/s/files/1/0448/6434/0130/files/78795141635.pdf
    • https://cdn.shopify.com/s/files/1/0438/0796/5341/files/fiwowujosagejanuko.pdf
    • https://cdn.shopify.com/s/files/1/0429/7526/4919/files/app_to_convert_webpage_into.pdf
    • https://static.usrfiles.com/ugd/6f53d7_0135e55a2a7e48cbaf6f8e24c2e39352.pdf
    • https://static.usrfiles.com/ugd/74a852_2f5b0438cab2448cad8631bfe8639e76.pdf
    • https://static.usrfiles.com/ugd/5ed537_38d61798f7cb4e999277d47798585e8f.pdf
    • https://static.usrfiles.com/ugd/b8c837_5924d111f715418a98d4d1b327a3dbb8.pdf
    • https://static.usrfiles.com/ugd/b8c837_7999ec000b414b9ab60f8d2f27abc963.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
font_00_sfnt_off0000a900.bin
efbc1a350d2b54f0d1892fc4579b151de4d9eaa6f8c1cfa46494ffbf327f7f24		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA900 5708 bytes
font_01_sfnt_off0000bc7c.bin
4541d6b50106d0be0df6cef099647d5f65a8c82074869351ec330f2b70ce601c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC7C 10736 bytes
font_02_sfnt_off0000e13c.bin
6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE13C 16164 bytes
font_03_sfnt_off0000f68d.bin
87207fc2e629248eccb5ff0e0c6d6ea8df94460c7e35a0e0cc31c3cc3aed9980		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF68D 5532 bytes

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