Malicious PDF — malware analysis report

Static analysis result for SHA-256 41361772bd21078c…

MALICIOUS

PDF

49.4 KB Created: 2020-09-17 00:40:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3de65dedd1288f64e0621e3f87a2c8f SHA-1: c33bba850bedb4b2b527dbf194032eeb244686e0 SHA-256: 41361772bd21078cf8cb7a3bb1a8a6eb694b99ee5e8415a3dadaa32662d31e97
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files, indicative of a link farm or SEO poisoning attack. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Liar's poker' and the malicious URL, suggesting a lure to trick users into visiting potentially harmful sites.

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.me/wix?keyword=liar%2527s+poker+pdf+espa%25C3%25B1ol
    • http://files.kdmetroeast.com/uploads/1/3/0/8/130874086/sogit_loginajorajinog.pdf
    • http://favobido.toris-pinkribbonjourney.co.uk/uploads/1/3/1/3/131398452/7859964.pdf
    • http://tijito.lubbertsorthodontics.com/uploads/1/3/1/4/131407492/jifix.pdf
    • http://files.praiseworldwide.net/uploads/1/3/1/4/131437823/94895b963b9c.pdf
    • https://79bff7cc-4e15-4125-a25d-77edf880312a.filesusr.com/ugd/29c71c_705fe735cb964e89a00483c41f597452.pdf?index=true
    • https://862d9ea6-da9d-4b4f-b3c3-073cfa5ad218.filesusr.com/ugd/1da05d_459bf41471b244619047416c4985e454.pdf?index=true
    • https://a8f6868b-78dd-4899-86d9-ca98dd0e9a40.filesusr.com/ugd/f95141_7935c6cc3a2a48d995bf3e0ae2718afa.pdf?index=true
    • https://930a850f-ec67-44b2-90b1-fa10e8961596.filesusr.com/ugd/4b874d_339590bb01154594b0c28285fa8e8165.pdf?index=true
    • https://f7a448f2-6231-4b8b-9b2d-7e4fe71b05c3.filesusr.com/ugd/5f5755_de2d09e60d654e7ba3a8617b75c6bd58.pdf?index=true
    • https://7d351604-0b19-4004-a954-a44be34e36f3.filesusr.com/ugd/3be48b_a11df265f439469491f13d14dde55173.pdf?index=true
    • https://8bb12146-644c-4d4d-a037-419d39fc799a.filesusr.com/ugd/1e4819_932ac4409f0346e2bb6e4894fcafb12e.pdf?index=true
    • https://f5be76b9-b517-450d-aa45-71157eb57054.filesusr.com/ugd/c450b2_58a69a6d7995485ea210a931cd80b303.pdf?index=true
    • https://2b9692a0-1f9c-46f0-9508-d5d9447e0327.filesusr.com/ugd/b9801a_2848077c52f444f1acc2a939f9b1dc07.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0438/2448/0416/files/vovolerepuji.pdf
    • https://cdn.shopify.com/s/files/1/0429/8198/2361/files/97052895765.pdf
    • https://cdn.shopify.com/s/files/1/0432/9403/2040/files/4043085972.pdf
    • https://cdn.shopify.com/s/files/1/0462/1867/4330/files/40385047403.pdf
    • https://cdn.shopify.com/s/files/1/0434/3352/5400/files/birdland_sheet_music_bass.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006576.bin
0a848b84d64bab6d7779016861b2d85df4a3c36d65ba350a716d21999918cb58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6576 5288 bytes
font_01_sfnt_off0000774d.bin
e0f2192579e4df4f8867baaa3b3e57294310667f5f5d04c32f06cfdcbe64c67c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x774D 10520 bytes
font_02_sfnt_off00009b4d.bin
99737858ebcb2f9e792813a4e397bd4b683f1f4f9ee64f66cb11de84ce260881		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B4D 17932 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.