Malicious PDF — malware analysis report

Static analysis result for SHA-256 e39de0d7fc72820e…

MALICIOUS

PDF

122.4 KB Created: 2020-08-21 08:17:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: accb7537941c13af515c965ef671459e SHA-1: 3829aa512436dfbb20b24477618b113a6678eec6 SHA-256: e39de0d7fc72820e262566afa909888580aa7a3e76ab589c5556a64f6c6579d2
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with many pointing to the 'ttraff.cc' redirector service. This suggests a link farm or redirection attack designed to obscure the ultimate malicious destination. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the content's intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.cc/pify?keyword=fusarium+incarnatum+first+report
    • http://files.golfclubmd.com/uploads/1/3/0/8/130813887/xobojejuputiru_pajimutiveva_tuzumunuwuwo_nawifef.pdf
    • http://files.idealcitydesigngroup.com/uploads/1/3/1/8/131871462/8544753.pdf
    • http://soguzenob.dkuntz.com/uploads/1/3/2/8/132816202/duwimofudu-fonodejojota.pdf
    • http://kopabub.brucesbroadway.com/uploads/1/3/0/8/130874038/juduf.pdf
    • http://files.bonding.no/uploads/1/3/1/6/131637606/1860893.pdf
    • https://cdn.shopify.com/s/files/1/0432/5982/2244/files/dulofemotumugokip.pdf
    • https://cdn.shopify.com/s/files/1/0429/6690/9081/files/xoxokirajipojex.pdf
    • https://cdn.shopify.com/s/files/1/0437/1588/7256/files/inhibition_of_protein_synthesis.pdf
    • https://cdn.shopify.com/s/files/1/0434/1035/8439/files/pugofejaxegorigopulogij.pdf
    • https://cdn.shopify.com/s/files/1/0434/6445/8405/files/challenge_rating_pathfinder.pdf
    • https://cdn.shopify.com/s/files/1/0437/6284/3797/files/setubumuzilirasen.pdf
    • https://cdn.shopify.com/s/files/1/0457/8652/9948/files/53562411503.pdf
    • https://cdn.shopify.com/s/files/1/0429/5557/1353/files/76053292950.pdf
    • https://cdn.shopify.com/s/files/1/0430/4856/6933/files/nadobevekexofup.pdf
    • https://cdn.shopify.com/s/files/1/0437/1457/6537/files/animated_images_of_flowers_free.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_off000179c9.bin
d90efc4e894b6c684111f0b13b1da633b89490f7dee55d8585feabe0dbc38b65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x179C9 4968 bytes
font_01_sfnt_off00018a8b.bin
19b9930f7de33e435915122f186874fad261a3999d9209246d119d093becfcb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18A8B 14440 bytes
font_02_sfnt_off0001b852.bin
b726ae66dca6187e4690d9fec3561d19020e38fb564701f78d9328561687cb2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B852 16300 bytes
font_03_sfnt_off0001cdfa.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1CDFA 4324 bytes

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