Malicious PDF — malware analysis report

Static analysis result for SHA-256 80d7e0709ae94d25…

MALICIOUS

PDF

39.4 KB Created: 2020-08-22 23:20:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c9d42325e2fd527288df59bd86947344 SHA-1: eca503a783216a7191fe479a53f2e979acc2e81e SHA-256: 80d7e0709ae94d25c34f2e09f1ba3cc62b9521d3dba0110ae05447a655ddaa85
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, including one pointing to a known malicious redirector at 'ttraff.cc'. The document body, though heavily obfuscated, contains text suggesting it is a 'one slide presentation template ppt'. This indicates a social engineering lure to trick the user into clicking the malicious link, likely leading to further malware download or exploitation. 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.cc/pify?keyword=one+slide+presentation+template+ppt
    • http://weramogi.sskalski.com/uploads/1/3/1/3/131379655/dudumiwupo.pdf
    • http://xakemuz.nmbstateforms.com/uploads/1/3/0/7/130740062/5f0d4b2ede12a.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6857/files/rugomimemin.pdf
    • https://cdn.shopify.com/s/files/1/0438/5544/6176/files/capital_expenditure_budget_template_excel.pdf
    • https://cdn.shopify.com/s/files/1/0432/6627/7531/files/11191432567.pdf
    • https://cdn.shopify.com/s/files/1/0432/7905/7056/files/60899098073.pdf
    • https://cdn.shopify.com/s/files/1/0440/8537/9237/files/carpal_tunnel_hand_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0435/2091/7668/files/ram_bhagwan_ke_wallpaper.pdf
    • https://cdn.shopify.com/s/files/1/0437/6009/1287/files/xizijola.pdf
    • https://cdn.shopify.com/s/files/1/0433/4977/0408/files/rirefadokidufuv.pdf
    • https://cdn.shopify.com/s/files/1/0435/6590/8136/files/nodarubitofusajupabusutuk.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9434/files/3612535262.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d90.bin
e98443000e8383c85623787b0a05c6ab75501302f2599f5019297307de27d2e5
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D90 5132 bytes
font_01_sfnt_off00006ee3.bin
40779cbdec1f4dd5fdb8025784636f00c1df9081d35a14b6438bbfdb65474d3b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE3 9820 bytes