Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cfc140a3467d4e3…

MALICIOUS

PDF

49.1 KB Created: 2020-08-20 08:57:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a7febdea02aacf5c384f03daadb7032 SHA-1: a15167f4b75afb40ac53d365299e8e36df7309cf SHA-256: 5cfc140a3467d4e3ba4f2b77c1b881ae0dd83ccd3547c6697c5c7dc50bc441e0
162 Risk Score

Malware Insights

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

The PDF contains a link to a redirector service, which is a common tactic for distributing malware or phishing pages. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to manipulate search engine results or distribute content broadly. Although no scripts were directly extracted, the PDF structure and embedded links point towards a malicious redirection workflow.

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=diamante+poem+template+online
    • http://gamepa.tadhgocuirrin.com/uploads/1/3/1/4/131407818/234c4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/54640011977.pdf
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/31369574579.pdf
    • https://cdn.shopify.com/s/files/1/0433/4433/0905/files/24691621248.pdf
    • https://cdn.shopify.com/s/files/1/0431/0079/9140/files/wozegarila.pdf
    • https://cdn.shopify.com/s/files/1/0435/2665/2055/files/vuresebokoj.pdf
    • https://cdn.shopify.com/s/files/1/0437/2732/3301/files/mumojafojovivazubor.pdf
    • https://cdn.shopify.com/s/files/1/0440/3894/6981/files/jitezolinegaziji.pdf
    • https://cdn.shopify.com/s/files/1/0433/1690/4104/files/rowalujezuge.pdf
    • https://cdn.shopify.com/s/files/1/0431/0663/1833/files/titabefeguvokajigazepigu.pdf
    • https://cdn.shopify.com/s/files/1/0439/4817/9611/files/uncle_murda_2016.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_off00005c27.bin
bd6272a57a7448c37551d70dc622bbd780a4432ec1fe5008908f4273a7ad71a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C27 4692 bytes
font_01_sfnt_off00006c0a.bin
ee51e48f0201635a4b70ca1643e57357b33612497f05603801ee8ba8942aac8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0A 15840 bytes
font_02_sfnt_off00009d75.bin
3a4638eecdb49a75d59dd3a6d9342f5cf136124eef043efc901be77837571066		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D75 17672 bytes

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