Malicious PDF — malware analysis report

Static analysis result for SHA-256 dda607cf781b7db0…

MALICIOUS

PDF

40.7 KB Created: 2020-08-16 17:47:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: afd936cdbbe8c492bcc627454940ffc5 SHA-1: e0a88c6d827c9a473610026e6353fa206790a3a6 SHA-256: dda607cf781b7db09db7aa3c3e8625829d3b588b9e6fdaba2be9adaa14fd39a1
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=atf+box+setup+9.+50+free'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'http://bazodu.ruthbeachink.com/uploads/1/3/1/4/131410685/ravanenezug-pevupudawonopuj.pdf'. The presence of a 'download button' heuristic further suggests a social engineering attempt to trick the user into clicking these links.

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.
  • 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
  • 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.ru/pify?keyword=atf+box+setup+9.+50+free
    • http://bazodu.ruthbeachink.com/uploads/1/3/1/4/131410685/ravanenezug-pevupudawonopuj.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/great_british_baking_show_season_2_contestants.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2217/files/85092358775.pdf
    • https://cdn.shopify.com/s/files/1/0431/2003/3943/files/preparation_of_acetanilide_from_aniline.pdf
    • https://cdn.shopify.com/s/files/1/0436/9825/8088/files/runir_2_fichiers_en_un_seul.pdf
    • https://cdn.shopify.com/s/files/1/0429/8843/7655/files/wesizovidinepogeguj.pdf
    • https://cdn.shopify.com/s/files/1/0438/5266/0901/files/32218426255.pdf
    • https://cdn.shopify.com/s/files/1/0433/7660/7390/files/old_briggs_and_stratton_carburetor_adjustment.pdf
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/torujibexawegidekazefemeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/5008/2202/files/xumezavovederaxif.pdf
    • https://cdn.shopify.com/s/files/1/0434/2035/2677/files/aladdin_story_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/0645/9032/files/ullrich_aluminium_extrusions.pdf
    • https://cdn.shopify.com/s/files/1/0434/3290/2806/files/nijegevutali.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_off00006148.bin
330684cfe2a7bdaa5aba3453b5e155eedb7be310d6dbf234bab8325d0407a199
pdf-font-stream PDF embedded font (sfnt) at offset 0x6148 5304 bytes
font_01_sfnt_off00007371.bin
f7766bba310abd937e67cbaed08f1981bddf58749520fd65f31af4d3bdc6ccbe
pdf-font-stream PDF embedded font (sfnt) at offset 0x7371 10272 bytes