Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9ef3af13bc19bdb…

MALICIOUS

PDF

83.3 KB Created: 2020-09-08 15:39:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4367dcdcb9b98e3ff30aff4607e8d47 SHA-1: a129f2e10414c25f90face6180274111ec761f6a SHA-256: e9ef3af13bc19bdb1a3be058359c745200bc3891f04a197faa0fb59c8eadef2c
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=age+of+empires+1997++android'. This URL is presented in a context that mimics search results for game downloads, suggesting a lure to trick users into clicking the malicious link. The PDF also exhibits characteristics of a link farm, with numerous embedded links, further supporting the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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/wix?keyword=age+of+empires+1997++android
    • https://cdn.shopify.com/s/files/1/0438/5033/4368/files/la_biblia_de_estudio_macarthur_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0446/6160/4505/files/boomerang_michael_lewis.pdf
    • https://cdn.shopify.com/s/files/1/0429/8375/1831/files/steam_games_on_android_box.pdf
    • https://cdn.shopify.com/s/files/1/0433/8827/2807/files/color_alive_app.pdf
    • https://cdn.shopify.com/s/files/1/0435/5211/2804/files/tofisadedupiwexevakadoxos.pdf
    • https://cdn.shopify.com/s/files/1/0428/1024/5286/files/utm_avo_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/5951/9387/files/11626257947.pdf
    • https://cdn.shopify.com/s/files/1/0438/2828/1506/files/vasare.pdf
    • https://cdn.shopify.com/s/files/1/0429/5386/7427/files/pibaxalabeboxexabom.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/95610310087.pdf
    • https://cdn.shopify.com/s/files/1/0430/9562/1781/files/68510840090.pdf
    • https://cdn.shopify.com/s/files/1/0440/0968/5150/files/4480524032.pdf
    • https://cdn.shopify.com/s/files/1/0434/2818/4231/files/cisco_ccnp_routing_and_switching_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0433/1274/2555/files/wixujomakop.pdf
    • https://cdn.shopify.com/s/files/1/0431/8468/5224/files/bapuzare.pdf
    • https://cdn.shopify.com/s/files/1/0432/5549/6866/files/rutupukigelilona.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3015/files/the_painted_veil.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7d1.bin
9f1d831be6dcccd7eb127552313d6f5230e69bd346ae1cb1f87591d3b37237af
pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D1 5604 bytes
font_01_sfnt_off0000fad2.bin
6b77f015d75589339f99951b3e845d61125308916dc85756c3c068af0eb4b1af
pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD2 1984 bytes
font_02_sfnt_off00010442.bin
30a7d47d8cf94e086fdb8301eee3d7e76c2f6d8e7c221cde67a8c3575caecac2
pdf-font-stream PDF embedded font (sfnt) at offset 0x10442 10864 bytes
font_03_sfnt_off00012987.bin
efa10eb016e3f3b0b4b9ca88735192a2169c3e2ea1838fdfae102cdad0ae9fb6
pdf-font-stream PDF embedded font (sfnt) at offset 0x12987 16212 bytes