Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e0ca726664cb7d3…

MALICIOUS

PDF

65.6 KB Created: 2020-08-23 14:32:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c98d3880c95e36f414df6f086bc5b57 SHA-1: c868a8420af4732876eec7509cae3e133f68c235 SHA-256: 4e0ca726664cb7d37ed2f020a0512001f6cddad97988fdb973ae4627d558d9f6
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains a reference to the same URL. This suggests the primary purpose is to redirect the user to a malicious site, likely for phishing or further 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.ru/pify?keyword=affirmative+and+negative+sentences+worksheets
    • http://files.kelleyandderek.com/uploads/1/3/0/8/130813108/kiwedifinemoxu_deziraf.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/baarishein_anuv_jain_mr_jatt.pdf
    • https://cdn.shopify.com/s/files/1/0440/4055/2598/files/tetisubapirenivarejaso.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8214/files/biography_outline_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4014/files/26938968458.pdf
    • https://cdn.shopify.com/s/files/1/0430/1645/4305/files/69929228717.pdf
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/cheminformatics_courses_in_bangalore.pdf
    • https://cdn.shopify.com/s/files/1/0430/9785/0017/files/26586090085.pdf
    • https://cdn.shopify.com/s/files/1/0431/5978/1538/files/748608829.pdf
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/27553047990.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b9d2.bin
85b692c1c636aed9ab1240d2a7361179fdd6c0849396a06064984f922e967b4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9D2 2828 bytes
font_01_sfnt_off0000c3cc.bin
7831e53a29c352aca2e0d5797823e97b731b4db2860889d37bc02e578b2227af		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3CC 5608 bytes
font_02_sfnt_off0000d6c2.bin
74287b28586eeb147337d492ca7ec9affbc5a0540c34db3ba76ac9008e8bcac9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C2 10096 bytes

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