Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e6f59f1cb0795fb…

MALICIOUS

PDF

38.5 KB Created: 2020-08-25 08:04:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe669560f87403e001e8bbe341a926f4 SHA-1: 50c46e3a70c8b721c1ad0c31bb82baa970d5be25 SHA-256: 9e6f59f1cb0795fb77ff196546610077692c4062b8cd48613c1229bc0dbb94b8
120 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 a redirector service. The primary link, disguised as interview preparation material, leads to 'ttraff.cc', a known malicious redirector. This suggests a phishing or social engineering attempt to direct users to malicious content. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the link farm and the malicious redirector are strong indicators of malicious intent.

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=maven+real+time+interview+questions+and+answers
    • http://kanupofu.eatforyourlifetoday.com/uploads/1/3/0/9/130969627/madeferegogapu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9147/7159/files/zulavujopabinolupo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6825/2565/files/7928425692.pdf
    • https://cdn.shopify.com/s/files/1/0428/5405/6092/files/74830863986.pdf
    • https://cdn.shopify.com/s/files/1/0430/8434/9591/files/number_worksheets_1_20.pdf
    • https://cdn.shopify.com/s/files/1/0431/5352/2850/files/algorithme_tableaux.pdf
    • https://cdn.shopify.com/s/files/1/0449/2935/1835/files/png_school_calendar_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/5290/0260/files/nijepixibi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9902/9655/files/tilimagubokunewufovudusum.pdf
    • https://cdn.shopify.com/s/files/1/0432/5598/8374/files/ignou_b._ed_form_date_2019.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_off0000596f.bin
fad0666cbd677de2ce639a2909edfda73f3195d436e16d80d659b135c9916996		 pdf-font-stream PDF embedded font (sfnt) at offset 0x596F 5252 bytes
font_01_sfnt_off00006b44.bin
549e2345fc9629f2f7d221c3f0e5592a579656c925d1e24ecc53af4bd01b0ecd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B44 9996 bytes

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