Malicious PDF — malware analysis report

Static analysis result for SHA-256 6522e231705e158d…

MALICIOUS

PDF

53.7 KB Created: 2020-09-03 05:46:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae0f8f5f9e8c46cfafaa3a0b76e5d722 SHA-1: 3be62191b0e2fddc5168e9da2fe9e915d3e2887f SHA-256: 6522e231705e158dc7de60bf36bf42c89c67c9875d01c20848ebb15c6f9f3e5d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.me', which is also present in the document body. This indicates an attempt to redirect the user to a malicious site, likely for phishing or malware distribution. The PDF also contains a large number of external links, suggesting a link farm or SEO spam tactic. The ML classifier strongly flagged this PDF as malicious.

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.me/wix?keyword=policy+and+procedure+template+for+restaurant
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/3911/9765/files/chammak_challo_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0433/6120/6422/files/tudekuramutojotatef.pdf
    • https://cdn.shopify.com/s/files/1/0434/2353/1175/files/accounting_dictionary_english_to_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0436/4782/8133/files/vermeer_1250_wood_chipper_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/4372/4186/files/applications_of_right_triangle_trigonometry_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/7157/8007/files/pros_and_cons_of_bilingual_education.pdf
    • https://cdn.shopify.com/s/files/1/0460/8399/7860/files/incidental_teaching_data_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0436/4907/3312/files/obgyn_shelf_exam_flashcards.pdf
    • https://static.usrfiles.com/ugd/73cb9e_cfbe608e90b147eb96fdbb46f4f4dfc6.pdf
    • https://static.usrfiles.com/ugd/d9e9a0_9a7cecc0c6c147cd955ffd294655d469.pdf
    • https://static.usrfiles.com/ugd/b8c837_4985129fd57a4576b36b95f300dba106.pdf
    • https://static.usrfiles.com/ugd/69695d_0ceb03159f2246c998b1f97e0f2d6219.pdf
    • https://cdn.shopify.com/s/files/1/0431/2743/9526/files/surujopi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/9935407204.pdf
    • https://cdn.shopify.com/s/files/1/0436/0480/3741/files/android_6._0_1_update.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_off000090f4.bin
ac8cf7a9981ac0616f1e18fb882abf88e443e696763563605987fa000fd6bf8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90F4 5404 bytes
font_01_sfnt_off0000a34d.bin
a198d2bda39eed8fdf2ae07d24216643a9d4a4ada4c8a470461d1c1cbb158332		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA34D 11096 bytes

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