Malicious PDF — malware analysis report

Static analysis result for SHA-256 dec053e448c3cc11…

MALICIOUS

PDF

52.1 KB Created: 2020-08-01 17:34:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3288b192566b13bf00f3e15802b70cfc SHA-1: ab291e27a100bf452e861e06fdd7a5e0ce545b0a SHA-256: dec053e448c3cc11fc5e2ee03ea2388a7f148280ea3d42fc09c3de88ba443053
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.003 Windows Command Shell T1059.001 PowerShell

The PDF contains a lure related to 'Cydia impactor error 160' and instructs the user to copy and paste content into a shell, indicating a command execution attack pattern. It also hosts a large number of links, many pointing to shopify.com, with one redirecting through a known malicious domain. The primary malicious URL is ttraff.ru, which is used as a redirector.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=cydia+impactor+error+160
    • http://files.cambridgeharriers.com/uploads/1/3/1/3/131383283/40262bddad3.pdf
    • http://files.gracecommunitycarshow.com/uploads/1/3/0/9/130969220/vepenoginusapiz-jativofugajuko-nunaninavefu.pdf
    • http://files.islandsforever.com/uploads/1/3/1/3/131384401/bobulatogelozakugit.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/1/0439/3598/9928/files/biwovuwobojimojamune.pdf
    • https://cdn.shopify.com/s/files/1/0430/0659/1127/files/98934120787.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/22650439267.pdf
    • https://cdn.shopify.com/s/files/1/0433/9145/1294/files/tenapul.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/13454665027.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/30302232851.pdf
    • https://cdn.shopify.com/s/files/1/0430/8379/2545/files/ruzubu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/19317225595.pdf
    • https://cdn.shopify.com/s/files/1/0427/9664/6556/files/bafokinonisokit.pdf
    • https://cdn.shopify.com/s/files/1/0440/7495/9000/files/nugumuxedixuvati.pdf
    • https://cdn.shopify.com/s/files/1/0432/2466/2173/files/mubexutom.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000631f.bin
b66038ce891b48ae867840c8d9d487828cd6c256ec2a3d72d13cb19866f82878		 pdf-font-stream PDF embedded font (sfnt) at offset 0x631F 2952 bytes
font_01_sfnt_off00006d9a.bin
53750ff83a9f4a176df29bba419c5567df0f8d5a82d270db07be7abe26ba136b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D9A 5364 bytes
font_02_sfnt_off00007fc0.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC0 1800 bytes
font_03_sfnt_off0000884e.bin
60edea96b3621fcbfa70c8ca59f63060380183301102a505a4fc837929bb329d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x884E 10648 bytes
font_04_sfnt_off0000acde.bin
aad9bc0f36eadc3314e08670b59090120051e308b357201f134af3d0b781b2b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACDE 16312 bytes

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