Malicious PDF — malware analysis report

Static analysis result for SHA-256 68c1c71dbca161d9…

MALICIOUS

PDF

38.3 KB Created: 2020-08-06 23:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 449d8cb70ee31613c1b23de2b75508f2 SHA-1: a057cc0a40feb5d809a68f3c1040b1f93f7970d3 SHA-256: 68c1c71dbca161d90a7423674561f8df9070d165f6078bcfbc1d6166091e0ab1
162 Risk Score

Malware Insights

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

The PDF contains embedded links that lead to a known malicious redirector, disguised as a free download for Adobe PDF Reader. The document body and heuristics indicate a lure to download software, with the primary malicious URL being a redirector that likely serves further malicious content. The presence of numerous external PDF links also suggests a link farm, potentially for SEO manipulation or to distribute further malicious content.

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.cc/pify?keyword=adobe+pdf+reader+free+download+for+windows+xp+32+bit
    • http://files.gordoncobbphd.com/uploads/1/3/0/9/130969242/7040740.pdf
    • http://files.outhustleathletics.com/uploads/1/3/1/6/131637150/tixilep.pdf
    • http://files.fcccambridge.org/uploads/1/3/1/4/131438086/tufax.pdf
    • http://files.michellestartzmanmetalwork.com/uploads/1/3/0/9/130969306/diwodi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/5165/4047/files/35877809506.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/84730902260.pdf
    • https://cdn.shopify.com/s/files/1/0433/8227/6250/files/5573106569.pdf
    • https://cdn.shopify.com/s/files/1/0437/5203/0357/files/31444851472.pdf
    • https://cdn.shopify.com/s/files/1/0439/2094/9403/files/15361347345.pdf
    • https://cdn.shopify.com/s/files/1/0433/4842/6910/files/lakotojajajarikopoxake.pdf
    • https://cdn.shopify.com/s/files/1/0429/2047/6828/files/bedenibepupimavaxa.pdf
    • https://cdn.shopify.com/s/files/1/0435/8320/9631/files/vetut.pdf
    • https://cdn.shopify.com/s/files/1/0434/5180/9942/files/torawiwubibiboramat.pdf
    • https://cdn.shopify.com/s/files/1/0439/2599/5688/files/sublime_text_python.pdf
    • https://cdn.shopify.com/s/files/1/0431/6836/6760/files/rokomanelizinifo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/giduxizeretewezedogesa.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_off000056d1.bin
24d36697d43affb96b3cf65a79ef9a4622c5c44ab50bc119e6544e6bb3be9a46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56D1 5620 bytes
font_01_sfnt_off00006a16.bin
4223c597364adfd47d015b8499e059cfaf42be7dc7b338832f3d56418733bef6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A16 10136 bytes

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