Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c11f655b3e0ede1…

MALICIOUS

PDF

41.9 KB Created: 2020-08-01 10:28:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2d3497c556e00b1d497220394de47937 SHA-1: b994e1c153896eaec4ee164445b8a85f1b5cee3e SHA-256: 0c11f655b3e0ede1bd2113d443c14467a1cb11b07de37767eafe56b0943c8069
162 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=tubing+bender+plans'. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a malicious intent to redirect the user to potentially harmful content. The document body, though heavily obfuscated, contains the malicious URL.

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=tubing+bender+plans
    • http://files.sjwib.org/uploads/1/3/2/6/132681464/fusanafafim_mijexagojur_pofukezem.pdf
    • http://files.livelongerbetter.net/uploads/1/3/1/6/131637273/jufabod.pdf
    • http://files.christianaharrell.com/uploads/1/3/0/8/130814169/fufewelovux-najudukedemi-lakiminavasi-jotewawawe.pdf
    • http://files.accreditedbeautyshortcourses.com/uploads/1/3/0/7/130775384/depipodolenasum-jabupotidiz-joramekikipat-besiga.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/4722/2422/files/28541224596.pdf
    • https://cdn.shopify.com/s/files/1/0428/9753/9231/files/236817867.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/pebenilorogusikas.pdf
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/sadasazuvijefise.pdf
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/53348552231.pdf
    • https://cdn.shopify.com/s/files/1/0437/0091/2283/files/never_love_a_highlander.pdf
    • https://cdn.shopify.com/s/files/1/0434/3175/5932/files/24130596168.pdf
    • https://cdn.shopify.com/s/files/1/0433/7880/2846/files/13022052162.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mitev.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6206/files/java_se_binary_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/5731/4983/files/vatedineretagukolatujetid.pdf
    • https://cdn.shopify.com/s/files/1/0431/1187/4716/files/10138644586.pdf
    • https://cdn.shopify.com/s/files/1/0431/8520/9506/files/gaxetab.pdf
    • https://cdn.shopify.com/s/files/1/0432/1237/4174/files/8412195917.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_off000062ec.bin
0408a91f4e64bfb9d8b6839c15a09605085fe71aa30dae10bddebe9369ea2cf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62EC 5216 bytes
font_01_sfnt_off000074b2.bin
84726eb1a42cadb334bdcc64d44a7f1dc41937955437583d82c7e88294fd575f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74B2 11132 bytes

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