Malicious PDF — malware analysis report

Static analysis result for SHA-256 12073faf2d62429c…

MALICIOUS

PDF

63.1 KB Created: 2020-08-23 11:14:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 631ee07d3b1576902b687fdac085ea05 SHA-1: bc200308219a7cdcd46bfb46cdd36297dd17fe55 SHA-256: 12073faf2d62429c1640661915a9e6590918ccb1a09506876617d6e89608ee04
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, contains text related to 'Online biodata format for marriage in marathi' and the malicious URL, suggesting a social engineering lure. The ML classifier also strongly flagged this PDF as malicious.

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.com/pify?keyword=online+biodata+format+for+marriage+in+marathi
    • http://files.metropolitanperformingarts.org/uploads/1/3/0/7/130776673/xafiwov-jaliguvudebo-kojamajat.pdf
    • http://files.keystone-equestrian.com/uploads/1/3/1/4/131406181/d4251d307d3a.pdf
    • http://tuxan.habitatgpmc.org/uploads/1/3/1/3/131384169/955361.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/15916113947.pdf
    • https://cdn.shopify.com/s/files/1/0434/8523/3304/files/vefunoxolujupegawule.pdf
    • https://cdn.shopify.com/s/files/1/0434/0183/8757/files/35542968768.pdf
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/67796248921.pdf
    • https://cdn.shopify.com/s/files/1/0435/7976/8995/files/sweetbitter_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/9642/4096/files/33195010072.pdf
    • https://cdn.shopify.com/s/files/1/0432/8544/6822/files/94985774880.pdf
    • https://cdn.shopify.com/s/files/1/0435/8311/1336/files/29118801792.pdf
    • https://cdn.shopify.com/s/files/1/0431/1282/4993/files/types_of_mesh_topology.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a2af.bin
6dfca7210981a1a8189f5d729bde02dee95781c2fa335cc525a8a9de71e1b355
pdf-font-stream PDF embedded font (sfnt) at offset 0xA2AF 5308 bytes
font_01_sfnt_off0000b48d.bin
5b3337dfd38baae3fd890203f41737cacc89a19dc5cf42ce34979bde0c79fa71
pdf-font-stream PDF embedded font (sfnt) at offset 0xB48D 10060 bytes
font_02_sfnt_off0000d732.bin
48c7575ac45ed3b7e5821d7d330545b72377dec1b4c717670834298151f053bd
pdf-font-stream PDF embedded font (sfnt) at offset 0xD732 6860 bytes