Malicious PDF — malware analysis report

Static analysis result for SHA-256 67d019633522d27d…

MALICIOUS

PDF

94.3 KB Created: 2020-07-29 22:47:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76e3417e6982834608e2ba1aa8f33df1 SHA-1: c858b8af78d5831fd036dd0ee1638c0408d62e0f SHA-256: 67d019633522d27dda39a4f0c8fa17e558d45cbc0cbe00fcc43053ee0930d09b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The SE_ADVANCE_FEE_SCAM_LURE heuristic suggests a social engineering pretext, likely a fake document to entice clicks. The ML_NYX_PDF_MALICIOUS model also strongly flagged this file. The primary IOC is the malicious redirector URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.com/pify?keyword=android+studio+3.+4+development+essentials+kotlin+edition+pdf
    • http://files.katehuffmanart.com/uploads/1/3/0/7/130776786/guwufewepovog_bumanakavazote.pdf
    • http://files.camperrentalwi.com/uploads/1/3/1/4/131437834/raxajikujigutufi.pdf
    • http://files.thepoipuppy.com/uploads/1/3/0/7/130739601/7c1158dfb9bf443.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1220/2389/files/pexuzifu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1097/2056/files/57977923318.pdf
    • https://cdn.shopify.com/s/files/1/0431/5388/3293/files/44593934819.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/27655516842.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9800/files/woximowosuforoputob.pdf
    • https://cdn.shopify.com/s/files/1/0432/6077/2510/files/megulodemefoxanul.pdf
    • https://cdn.shopify.com/s/files/1/0431/2452/3169/files/lunirapaberowikemesujupul.pdf
    • https://cdn.shopify.com/s/files/1/0431/7885/2503/files/reduxusivudenenapete.pdf
    • https://cdn.shopify.com/s/files/1/0437/8735/4270/files/33512947597.pdf
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/ganonisibowos.pdf
    • https://cdn.shopify.com/s/files/1/0434/3355/8168/files/reguvipogefipivaxoj.pdf
    • https://cdn.shopify.com/s/files/1/0437/7896/5656/files/ledavebebonemizikid.pdf
    • https://cdn.shopify.com/s/files/1/0432/9930/7678/files/sifijeloko.pdf
    • https://cdn.shopify.com/s/files/1/0434/1560/1319/files/96269642150.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012e36.bin
f188cd787dfbd01cde6b6e6dd59c9e8256ebf7789f782deb4667830c2f58516a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E36 5468 bytes
font_01_sfnt_off000140c4.bin
1cba98d2b24ac14b10e14fca1e620243f4d7f45e061b0c6cdf2eb68f0b91cfd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x140C4 12840 bytes

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