Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd08b757aa63b78f…

MALICIOUS

PDF

57.3 KB Created: 2020-08-19 22:44:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 11fc09277950542878878e1f6f086e06 SHA-1: df572daee2fd4aaf0ac297a5f70f15ebf7065042 SHA-256: fd08b757aa63b78f6b7d5b9d9188f55baf89ed1d8ebe6df45b0b0d7e61e6b24e
152 Risk Score

Malware Insights

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

This PDF file contains a significant number of external links, a technique often used to create link farms for SEO manipulation or to distribute malicious content. One of the primary links, https://ttraff.ru/pify?keyword=bahubali+2+video+songs+free, is identified as a malicious redirector. The document body itself appears to be obfuscated or corrupted, but the presence of numerous links, including those hosted on shopify.com and various file-hosting domains, strongly suggests a malicious intent to lure users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.ru/pify?keyword=bahubali+2+video+songs+free
    • http://files.jaycountyrobotics.com/uploads/1/3/2/6/132681409/rutopozuged_wobabujamajepu_zodimewuxive.pdf
    • http://files.sadeturkishcoffee.com/uploads/1/3/2/6/132695492/64036e.pdf
    • http://files.excelism.in/uploads/1/3/1/0/131069950/a80a9.pdf
    • http://files.majorpalooza.com/uploads/1/3/0/7/130740173/4904676.pdf
    • http://files.djeduardoalves.com/uploads/1/3/1/6/131636969/9623440.pdf
    • https://cdn.shopify.com/s/files/1/0433/9613/7111/files/lowaxorizofupotomumefu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5158/1597/files/xexezibafewipisufu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0470/6464/files/vapopekufunez.pdf
    • https://cdn.shopify.com/s/files/1/0439/4346/1032/files/vobamo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3257/files/americanah_summary.pdf
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/80994577298.pdf
    • https://cdn.shopify.com/s/files/1/0432/9593/2574/files/marvellous_technique_for_ielts_writing.pdf
    • https://cdn.shopify.com/s/files/1/0447/0718/4793/files/videohive_music_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/7764/0092/files/26414777335.pdf
    • https://cdn.shopify.com/s/files/1/0427/8019/7031/files/camera_angles_and_shots_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/9956/9832/files/84793439906.pdf
    • https://cdn.shopify.com/s/files/1/0433/9056/6556/files/best_cracked_minecraft_servers.pdf
    • https://cdn.shopify.com/s/files/1/0428/5631/7091/files/diladopobune.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_off00006abf.bin
3ceaa444adf9ffae423d9a32f18ec66016abda8c0ce98222511f7cfa456be762		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ABF 5548 bytes
font_01_sfnt_off00007d96.bin
b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D96 3720 bytes
font_02_sfnt_off000088f9.bin
1b9f9c355c15a7d0a4fe8527b2ba7cc21b60b1fb23f08261b0cd3541caa6a46e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88F9 14264 bytes
font_03_sfnt_off0000b5d9.bin
d028bd7c8eef760d77fe891df7153608e57f8ba6ce37848129e3f3a7d4507ac2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB5D9 10708 bytes

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