Malicious PDF — malware analysis report

Static analysis result for SHA-256 48daba08e265eb6f…

MALICIOUS

PDF

51.5 KB Created: 2020-08-17 11:20:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b605337e0c7a6c86aeeccb7cc9091a51 SHA-1: e1e6acc94c3ae6a7fd639cb2205dafc0105161b9 SHA-256: 48daba08e265eb6fc99fd58fa5cc84abe951f3d6d4ae8a6d5eac6ae7ee243bde
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to potentially malicious redirectors or unknown domains. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a URL leading to traff.ru, indicating a redirection to malicious infrastructure. The ML classifier also strongly indicates maliciousness. The document body appears to be obfuscated or corrupted, but the presence of the malicious URL within it reinforces the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=fi+dhilal+al+quran+arabic+pdf
    • http://koxeku.mshsupwardbound.com/uploads/1/3/0/7/130739192/lijepebetoka.pdf
    • http://files.leannwiggins.com/uploads/1/3/1/4/131438059/2125876.pdf
    • http://files.familyforeveranimalfoundation.org/uploads/1/3/1/6/131637896/9177987.pdf
    • http://tibef.michaelgwilliams.com/uploads/1/3/2/8/132814930/mefexisoro_vonomemuj_vufipurikivebi_gakonigisezisu.pdf
    • https://cdn.shopify.com/s/files/1/0440/3301/5958/files/havering_sixth_form_college_hornchurch.pdf
    • https://cdn.shopify.com/s/files/1/0431/1770/7425/files/91339215436.pdf
    • https://cdn.shopify.com/s/files/1/0432/1322/6139/files/attestation_de_travail_cesu.pdf
    • https://cdn.shopify.com/s/files/1/0439/9595/5358/files/fofowukalaluxugakunokogu.pdf
    • https://cdn.shopify.com/s/files/1/0439/5089/9368/files/539846509.pdf
    • https://cdn.shopify.com/s/files/1/0432/7974/5192/files/witiwimepazop.pdf
    • https://cdn.shopify.com/s/files/1/0435/2730/7416/files/4522472342.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00009423.bin
de1468c4e5550b065802e0a5f1b13e45f15dfa575fe409e36c10b933c3d5ff03		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9423 18812 bytes
font_00_sfnt_off0000602e.bin
f86a35ce1ddc671665f8aaf76d002932e3b42d4b59f7807154c27bdd5e6936ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x602E 4860 bytes
font_01_sfnt_off00007086.bin
48ee3f8b0bc7e2cd0f166a97da88b952561c09b1c37ada45b0132bfe6187980a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7086 10532 bytes
font_03_sfnt_off0000b2ec.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB2EC 4324 bytes

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