Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b5d366335f96920…

MALICIOUS

PDF

38.4 KB Created: 2020-08-30 20:25:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43edb4823fbac6fcd7f74b3561ccea8d SHA-1: c5e3f0d4d8a828163cb01c61df761ca353b06092 SHA-256: 1b5d366335f9692064639adea499bdbd415d5c22709fd6c3df833305339a744c
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains the URL "https://ttraff.ru/wix?keyword=reading+plus+site+codes", which is flagged as a malicious redirector. This suggests the document is designed to lead users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, and the document body's content is largely unreadable beyond the embedded URLs.

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/wix?keyword=reading+plus+site+codes
    • https://static.usrfiles.com/ugd/b8c837_32307e46f22b4d13a12dade640d34f83.pdf
    • https://static.usrfiles.com/ugd/516793_ecdb84b699e44147ab740dd85bcb0f37.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0a1acd69a744bdc87d22a4cbe0bff06.pdf
    • https://cdn.shopify.com/s/files/1/0433/8827/2805/files/68442770631.pdf
    • https://cdn.shopify.com/s/files/1/0460/3625/4879/files/holiday_barbie_value.pdf
    • https://cdn.shopify.com/s/files/1/0433/4062/8133/files/free_adobe_editor_crack.pdf
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/subigatux.pdf
    • https://static.usrfiles.com/ugd/b8c837_9d21e1021dd74b42ab8076b0292f950c.pdf
    • https://static.usrfiles.com/ugd/d5cf39_0b3ef7d7edf04c93b5e7830578a7fe22.pdf
    • https://static.usrfiles.com/ugd/7c3584_8377c28ffc6345a7a323c4d9fc909233.pdf
    • https://static.usrfiles.com/ugd/36f25b_98219395efef47eaabf1d51019c5fe86.pdf
    • https://static.usrfiles.com/ugd/b8c837_79b507ca0b134cffa733b2836ba609dd.pdf
    • https://cdn.shopify.com/s/files/1/0429/6451/7023/files/sazezutesakotuxix.pdf
    • https://cdn.shopify.com/s/files/1/0464/7095/5166/files/juzebolifami.pdf
    • https://cdn.shopify.com/s/files/1/0437/1123/4199/files/business_process_modeling_notation.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_off00005802.bin
4162d7733ea84971240b45c79ff76eeadafcff57a3c1127e10531742ddbf023b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5802 5152 bytes
font_01_sfnt_off0000699a.bin
615c6c2a017f4a807778b8e4f6e53f3af7438e3f40f52f27404ae63e12a861e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x699A 10428 bytes

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