Malicious PDF — malware analysis report

Static analysis result for SHA-256 45edfc16995bfabf…

MALICIOUS

PDF

41.1 KB Created: 2020-08-16 21:06:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e83d8f9f096b4371e9aa316f71b2df8 SHA-1: 97d2a82010ee2baa02f99a1d65b8717afff85c4c SHA-256: 45edfc16995bfabffb7fbbcf406608bd2ee824ec8e002398bbfd3bc8aef41894
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the malicious URL 'https://ttraff.cc/pify?keyword=challani+o+chirugali+ayyappa+naa+song'. This indicates the primary purpose is to lure the user to a potentially harmful site, likely for phishing or distributing further malware.

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.cc/pify?keyword=challani+o+chirugali+ayyappa+naa+song
    • http://files.dlfinancial.org/uploads/1/3/1/3/131379749/tobij.pdf
    • http://tenuxami.qiboacupuncture.com/uploads/1/3/0/7/130776485/b07b01eb229.pdf
    • http://gixiro.ciprianoclassic.com/uploads/1/3/2/7/132710621/resap_rojolawumu_wumubabolido.pdf
    • https://cdn.shopify.com/s/files/1/0431/7960/6177/files/kidifafivupiperifofo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4185/7448/files/luxuvasiza.pdf
    • https://cdn.shopify.com/s/files/1/0434/5682/3453/files/75036009174.pdf
    • https://cdn.shopify.com/s/files/1/0432/4704/2728/files/pandas_replace_nan.pdf
    • https://cdn.shopify.com/s/files/1/0430/9493/3665/files/76301223879.pdf
    • https://cdn.shopify.com/s/files/1/0430/9945/5642/files/nalipisare.pdf
    • https://cdn.shopify.com/s/files/1/0434/0203/5351/files/sozejeziladodarewu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/93754171864.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/1401564658.pdf
    • https://cdn.shopify.com/s/files/1/0430/3765/5193/files/git_delete_last_commit.pdf
    • https://cdn.shopify.com/s/files/1/0432/7427/2924/files/gimatoxol.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/kijowedanedatesubugube.pdf
    • https://cdn.shopify.com/s/files/1/0429/4803/4716/files/soduxofozo.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_off000056ed.bin
901c1ab0ff77ea6e2365b3ebcd0b11a616ab3d4d4c6f7e95ef10bb555f1411e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56ED 5204 bytes
font_01_sfnt_off0000689b.bin
fc3cba947a6cb1f52669d6cfa0dd5ee84c34f87f66878c73296a6670d9d66872		 pdf-font-stream PDF embedded font (sfnt) at offset 0x689B 15024 bytes

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