Malicious PDF — malware analysis report

Static analysis result for SHA-256 6770ef873d40927a…

MALICIOUS

PDF

50.4 KB Created: 2020-08-23 18:01:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee9a05b8674a874cec16e899095113af SHA-1: 62784c98262b7fe104400dafa2f5b08c216ae8ff SHA-256: 6770ef873d40927a393c62a68425a025285c3f397964ff1db71a803de126d4ed
162 Risk Score

Malware Insights

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

The PDF contains a link that redirects to known malicious infrastructure, disguised as a download for cracked software. The ML classifier strongly indicated maliciousness, and the presence of a link farm further supports a malicious intent to distribute harmful content. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=catia+v5+r27+crack
    • http://degorotix.drjamesworling.com/uploads/1/3/1/8/131855981/dogugimemoxa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/1758/4283/files/certificado_medico_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0428/9062/5191/files/rozulizajus.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20807514836.pdf
    • https://cdn.shopify.com/s/files/1/0430/6056/0021/files/duser.pdf
    • https://cdn.shopify.com/s/files/1/0434/9755/4084/files/jadawujilavoba.pdf
    • https://cdn.shopify.com/s/files/1/0435/0876/0735/files/jebozowelodixiletif.pdf
    • https://cdn.shopify.com/s/files/1/0427/7587/1654/files/bimirotelidazosawori.pdf
    • https://cdn.shopify.com/s/files/1/0432/1548/7133/files/32788596551.pdf
    • https://cdn.shopify.com/s/files/1/0434/6612/9574/files/85814577253.pdf
    • https://cdn.shopify.com/s/files/1/0430/8077/7882/files/gadubulegosegosojudi.pdf
    • https://cdn.shopify.com/s/files/1/0438/2710/1853/files/91690862102.pdf
    • https://cdn.shopify.com/s/files/1/0449/8269/8142/files/amazon_delete_saved_for_later.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007198.bin
29788af53d824ca077951cf517040fca10b65f78250d0e736fa942b286dee7a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7198 4948 bytes
font_01_sfnt_off00008294.bin
7b3e10c16cc08951d2e05598d117ef3ee15192bf241709bec06ab269b27b4e0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8294 11460 bytes
font_02_sfnt_off0000a81b.bin
fce21d86c2b5faa43a5619d6c859002d414ef8720c10ef6ba746f045f1b0bfa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA81B 16076 bytes

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