Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8ec05b0052a3b1b…

MALICIOUS

PDF

52.3 KB Created: 2020-08-13 03:21:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53030db39a2206a2e8f76cd75083fce8 SHA-1: 39f16c3415bc4d640b4719cbd92123cce874e411 SHA-256: e8ec05b0052a3b1b120ec31fd52fd8ace68b9a83f480e5e7f9596349acd05ea0
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though partially corrupted, suggests a lure related to a 'Bsc 1st year physics book pdf'. The primary malicious URL identified is https://ttraff.cc/pify?keyword=bsc+1st+year+physics+book+pdf, which likely serves as a gateway to further malicious content. The presence of a link farm, with many links pointing to Shopify domains, suggests an attempt to obscure the malicious infrastructure.

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=bsc+1st+year+physics+book+pdf
    • http://files.lincolncityglasscenter.com/uploads/1/3/0/7/130776200/8724944.pdf
    • http://korigido.foothill-highlands-rotary-wine-tasting.org/uploads/1/3/1/4/131407552/4763121.pdf
    • http://fajesemib.fbmarion.org/uploads/1/3/2/7/132740813/3875315.pdf
    • http://duxowa.thebelleblog.com/uploads/1/3/1/4/131453267/nuvisijija.pdf
    • https://cdn.shopify.com/s/files/1/0436/2915/0368/files/zujipuwujaxesezoderinurej.pdf
    • https://cdn.shopify.com/s/files/1/0432/9180/3801/files/apoplasto_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0434/6891/4838/files/nuniwavomewena.pdf
    • https://cdn.shopify.com/s/files/1/0431/9726/8128/files/jobimanaxurubo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8645/3663/files/the_aryavarta_chronicles_book_1_govinda.pdf
    • https://cdn.shopify.com/s/files/1/0434/5446/4165/files/jevizo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3031/5159/files/jetesos.pdf
    • https://cdn.shopify.com/s/files/1/0437/0520/4888/files/dumidoxazapopu.pdf
    • https://cdn.shopify.com/s/files/1/0447/4263/9765/files/37972799253.pdf
    • https://cdn.shopify.com/s/files/1/0437/9289/2061/files/megovimeranetowijasubake.pdf
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/siwemo.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ff6.bin
310b0efc8474fbf36b06e5c3c76cb9f35deea45e2161cc55f8ec26aef03714bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF6 5620 bytes
font_01_sfnt_off00007303.bin
55deeea3a93518db721a97da0d8f9359fab86ec4add728a48e55287c41c27800		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7303 3204 bytes
font_02_sfnt_off00007ff3.bin
7bb91423d63eb6bd7c2657278979848d60b7d38679106ec23dbd755ba6ab3d32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF3 2320 bytes
font_03_sfnt_off00008a43.bin
2eaeb969bdf408bd0a2802bf85519295d5068fc9be30431e10b6060d245cc72a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A43 10392 bytes
font_04_sfnt_off0000adc8.bin
5f3bf50395e8d1b65f29ab90a426c3665da69f8437ae50e88eef237d5e22552a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADC8 16224 bytes

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