Malicious PDF — malware analysis report

Static analysis result for SHA-256 563b861d7a1b9e1d…

MALICIOUS

PDF

40.2 KB Created: 2020-09-14 02:39:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3560e5ed572cbbe6f12e9d852da43829 SHA-1: e7e20bc3416292bfb5b1b7292eaf1300dff58b18 SHA-256: 563b861d7a1b9e1d37cdf894e74b6b840dea506695ad5e091e09b1098cfb1629
152 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with several pointing to known malicious redirectors and link farms. The document body, though partially corrupted, includes a URL that aligns with the detected malicious redirector. This suggests the primary intent is to lure users to external sites, likely for phishing or malware delivery. No scripts were extracted, limiting the analysis of specific execution behaviors.

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.club/wix?keyword=how+to+say+answer+me+in+spanish
    • http://topusiwil.caribbeandreamsconcert.com/uploads/1/3/2/8/132815002/3961414.pdf
    • http://files.rabbithoppingsocietyofaustralia.com/uploads/1/3/0/8/130813757/9ff8cd0a.pdf
    • http://files.headstockofwoodstock.com/uploads/1/3/1/6/131606289/5099590.pdf
    • http://bevoxuwe.abundance-endeavors.com/uploads/1/3/1/3/131381078/8359b966.pdf
    • http://loviw.mprints.shop/uploads/1/3/0/9/130969723/5314096.pdf
    • https://static.usrfiles.com/ugd/defcb2_ac6c99657d7641ec8d7e6e8793a7bbc6.pdf
    • https://static.usrfiles.com/ugd/afe78f_931652ef63cb41ec8f9be11ba7164ce4.pdf
    • https://static.usrfiles.com/ugd/6116da_82a5713c63ba4327bca9edd1bffb04ad.pdf
    • https://static.usrfiles.com/ugd/60933b_1d25cb302bce46fba69b005174361fed.pdf
    • https://static.usrfiles.com/ugd/5e8de6_77cfabab3e2c40d68d374b512e1c9ae4.pdf
    • https://static.usrfiles.com/ugd/54b9a1_5297792b3b87430bb47d3bf63c64d3db.pdf
    • https://static.usrfiles.com/ugd/6908d7_423e730ca2724ddf9e2d1f5a16a5901e.pdf
    • https://static.usrfiles.com/ugd/05301a_42cd4683d1ef43cd83550190eb5169af.pdf
    • https://static.usrfiles.com/ugd/3b6424_0a2b44cb16b84069839cd33a3ed3eadb.pdf
    • https://static.usrfiles.com/ugd/95089d_54695637a4ab49acae65fc17e2e286ef.pdf
    • https://static.usrfiles.com/ugd/b8c837_40b1f17ba8ed4ee1abea3242e75930a3.pdf
    • https://static.usrfiles.com/ugd/18ee90_20c608ae05fc4c00a87fb1ef0051396a.pdf
    • https://static.usrfiles.com/ugd/ffe0d3_e4d274b33aae4b93ba8d5064eb78a002.pdf
    • https://static.usrfiles.com/ugd/a37a2e_115a20caa38f45288cabe98539902f70.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006080.bin
e5392d4d1d96ce9addd9344bb623fb4152b60e7ce23122cec5ba984685d5841b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6080 5184 bytes
font_01_sfnt_off00007208.bin
34e4d6d41f87bdaf8daee017501c29e4de15825837b5324358fe4fde6fdd4b9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7208 9832 bytes

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