Malicious PDF — malware analysis report

Static analysis result for SHA-256 9343896266a8c8f2…

MALICIOUS

PDF

46.9 KB Created: 2020-08-07 09:52:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d6d0ebd5f453b80a77f061ba79bf113 SHA-1: 64b8ada641cb98398e63c6d1ec156ec12a7ff310 SHA-256: 9343896266a8c8f25f1da04db436aab63f1eba6fe1551f8b3f155c738f78beef
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic firing indicating a malicious redirector. The primary malicious URL, https://ttraff.com/pify?keyword=ap+biology+lab+1+osmosis+and+diffusion+pdf, is designed to lure users into clicking through to a potentially harmful destination. The document body, though heavily obfuscated, contains references to the malicious URL and other PDF files, suggesting a link farm or redirection strategy.

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/pify?keyword=ap+biology+lab+1+osmosis+and+diffusion+pdf
    • http://sokanudax.shopvinocellars.com/uploads/1/3/2/7/132740405/xudad_kekago.pdf
    • http://files.theboxdonut.ca/uploads/1/3/0/8/130874114/155016.pdf
    • http://files.greenwoodbows.com/uploads/1/3/2/6/132681586/tosolomudigizeg.pdf
    • https://cdn.shopify.com/s/files/1/0435/5158/8507/files/lafigib.pdf
    • https://cdn.shopify.com/s/files/1/0433/6192/7318/files/97200160446.pdf
    • https://cdn.shopify.com/s/files/1/0434/5469/3529/files/ace_the_technical_pilot_interview_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/0675/4970/files/lipuxekojodesa.pdf
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/lord_of_the_rings_novels.pdf
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/popepebexazutu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5570/2425/files/rukikepizerulufuzewiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/7854/9665/files/tiguzetelekixujo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0212/5733/files/95042184503.pdf
    • https://cdn.shopify.com/s/files/1/0433/4393/7690/files/45890458737.pdf
    • https://cdn.shopify.com/s/files/1/0431/5866/7430/files/balanis_antenna_theory.pdf
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/class_10_science_chapter_11_notes.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_off00007820.bin
0b55cb53e2e1c2addd349f29752dcfe8d9465589e2795efb5976f446f2e1c3b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7820 5548 bytes
font_01_sfnt_off00008aff.bin
17416b6c347b592ad3677c4bcc66300dce448d2658c2e464f8514e1ac52fdeb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AFF 10404 bytes

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