Malicious PDF — malware analysis report

Static analysis result for SHA-256 1642c6e3ae915f99…

MALICIOUS

PDF

40.6 KB Created: 2020-08-09 13:32:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 463fce6b045bdf349007028f8960231b SHA-1: af48727e4357f07302c406af488c3108842cbd4b SHA-256: 1642c6e3ae915f997d8b4624208f0e8e1f07d9770d3e715c2ab8e9d67aac00dc
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document also includes a 'download button' lure, suggesting a phishing or social engineering attempt. The presence of numerous external PDF links, many pointing to Shopify, indicates a potential link farm strategy, though some are marked as benign. The ML classifier strongly flags this PDF as malicious.

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=ancient+egypt+gods+worksheet+pdf
    • http://files.mrscooksclass.com/uploads/1/3/1/0/131070178/3420aaff2d6e5.pdf
    • http://files.mindwellmarketing.com/uploads/1/3/1/3/131398542/0adeb74c9e7d.pdf
    • http://files.ponyexpressgamez.com/uploads/1/3/0/8/130874377/1390004.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/4848/5535/files/fuxibupavemotupejeweb.pdf
    • https://cdn.shopify.com/s/files/1/0434/4905/7430/files/printable_weekly_planner_template.pdf
    • https://cdn.shopify.com/s/files/1/0450/1107/5222/files/vocabulary_for_ielts_collins.pdf
    • https://cdn.shopify.com/s/files/1/0428/4760/0796/files/16876439474.pdf
    • https://cdn.shopify.com/s/files/1/0431/1253/0081/files/75723462403.pdf
    • https://cdn.shopify.com/s/files/1/0429/3269/9292/files/69255326854.pdf
    • https://cdn.shopify.com/s/files/1/0431/2327/7973/files/zibigozebimeke.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8095/files/brennan_manning_ragamuffin_gospel.pdf
    • https://cdn.shopify.com/s/files/1/0437/4170/8453/files/nanepukusujoburazisirixes.pdf
    • https://cdn.shopify.com/s/files/1/0435/7337/9231/files/maxims_of_politeness.pdf
    • https://cdn.shopify.com/s/files/1/0428/9275/5103/files/zawodivefokelupirumebi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/4709379777.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_off0000622b.bin
9d3bd05149094eeafa0bb3db362ec5c322b5c6874e7c22b74f6d3c2b1edd8aa4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x622B 5420 bytes
font_01_sfnt_off000074b9.bin
f54a1a315da862fa38cc584eb5245809082392276dc21fd8f5b00110a93eade6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74B9 9596 bytes

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