Malicious PDF — malware analysis report

Static analysis result for SHA-256 06b50a8ce0ca2a3d…

MALICIOUS

PDF

41.2 KB Created: 2020-08-23 17:16:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac0e223c8da85b7d3b3053ca1ff8d9fd SHA-1: af38407acfaa43018d5e6e541f448453e8d4c1d4 SHA-256: 06b50a8ce0ca2a3d9bea4231307ae20e3f2061db947fc6b1292b80639280ea23
154 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to the 'Michelin guide alsace lorraine champagne'. The presence of numerous links, many pointing to Shopify, suggests a link farm or redirection scheme designed to lead users to malicious content. The ML classifier also strongly indicated maliciousness.

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.cc/pify?keyword=michelin+guide+alsace+lorraine+champagne
    • http://rupisug.ichooseme.org.uk/uploads/1/3/0/8/130814017/limevezijamenatikam.pdf
    • http://files.implicitbiascleanse.com/uploads/1/3/1/6/131637273/sixakubaridetadadere.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/7920/2984/files/86515153129.pdf
    • https://cdn.shopify.com/s/files/1/0430/8143/3242/files/45512036802.pdf
    • https://cdn.shopify.com/s/files/1/0433/6189/4565/files/sukokupumavigifozivuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/4536/3610/files/fogaxos.pdf
    • https://cdn.shopify.com/s/files/1/0440/0994/7301/files/94190940054.pdf
    • https://cdn.shopify.com/s/files/1/0438/6462/1216/files/wixanewavude.pdf
    • https://cdn.shopify.com/s/files/1/0433/0386/2440/files/riwonuzopedege.pdf
    • https://cdn.shopify.com/s/files/1/0432/7863/1072/files/46508306962.pdf
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/zolodavitonugakif.pdf
    • https://cdn.shopify.com/s/files/1/0430/2379/4337/files/23253532552.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_off00006049.bin
79e4d69f61450028cc8b35dd121f1b5a4b21a3dafc188659aefe95d035394ff8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6049 5492 bytes
font_01_sfnt_off000072ca.bin
dc7bc2b169a9d540c33b712c88272f1e74fc6b8edbc4b411bd4749dce8a3cdcf
pdf-font-stream PDF embedded font (sfnt) at offset 0x72CA 10900 bytes