Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb2dc66f1164a8e4…

MALICIOUS

PDF

42.7 KB Created: 2020-09-02 00:43:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57291cccf3df9c451aab468591c36c0d SHA-1: 7cc6a4b947c94df2d7172815058591b71a7ac152 SHA-256: eb2dc66f1164a8e4c55b525c7d7402b4ca366cf135e0df1cac511bf38add5039
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in Systems T1059.001 PowerShell

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.com/wix?keyword=social+media+video+er+app', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of a link farm and a malicious redirector indicates an attempt to lead users to harmful content, likely for phishing or malware delivery.

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=social+media+video+er+app
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/spongebob_characters_coloring_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0437/3705/5393/files/32049395421.pdf
    • https://cdn.shopify.com/s/files/1/0432/9875/0629/files/bleak_house_free_download.pdf
    • https://static.usrfiles.com/ugd/b8c837_d82431258d294cb28df6f2b71e44f2a7.pdf
    • https://static.usrfiles.com/ugd/9ea9b6_fe31e0db08874065b173f674f91cf3c7.pdf
    • https://static.usrfiles.com/ugd/77941b_2c0cb6e551914f1ebe697f90b2b5a058.pdf
    • https://cdn.shopify.com/s/files/1/0432/6113/2962/files/61100210405.pdf
    • https://cdn.shopify.com/s/files/1/0432/4294/6715/files/81368680606.pdf
    • https://cdn.shopify.com/s/files/1/0437/6231/9518/files/81372287039.pdf
    • https://cdn.shopify.com/s/files/1/0432/5271/1581/files/anonytun_achi_apk_uptodown.pdf
    • https://cdn.shopify.com/s/files/1/0429/8424/3351/files/43960912192.pdf
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/50431422827.pdf
    • https://cdn.shopify.com/s/files/1/0429/4210/3719/files/maria_west_side_story_partitura_piano.pdf
    • https://cdn.shopify.com/s/files/1/0433/0124/0985/files/fuerzas_intermoleculares_ejercicios_resueltos.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_off00006878.bin
dc73d4a8523a017147ebab1191ece306761bc3e12ef12bc5a22bd23b27f44667		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6878 5204 bytes
font_01_sfnt_off00007a20.bin
a909fca48c891c5041e1d4832e198a5661051bf147d73fcd67b68657f1230eee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A20 11160 bytes

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