PDF malware analysis — malicious · d5d64398e61ded6f

MALICIOUS

PDF

50.6 KB Created: 2020-08-24 08:10:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 02d86998d6e4bfde0e002b55d9a1a456 SHA-1: 08f000d108850fd62d28e770f0629be9014f2bc3 SHA-256: d5d64398e61ded6fc20a92f5652c46e51e266c0fdbe5023bd64572a4c514d340

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, many of which point to a redirector service (ttraff.com). The document body, though heavily obfuscated, contains the text 'Enthusiasm related forms' and the malicious redirector URL, suggesting a lure to a phishing or malicious content site. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a coordinated effort to distribute malicious content.

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.com/pify?keyword=enthusiasm+related+forms
- http://files.nducuwangugi.com/uploads/1/3/0/9/130969555/gimuviri-megatanizus-selusifo.pdf
- https://cdn.shopify.com/s/files/1/0431/0951/5413/files/31815924574.pdf
- https://cdn.shopify.com/s/files/1/0428/9481/9495/files/ucla_career_center_resume_guide.pdf
- https://cdn.shopify.com/s/files/1/0435/9503/8877/files/vifukuvugipowukadop.pdf
- https://cdn.shopify.com/s/files/1/0431/1711/7601/files/class_2_cavity_preparation.pdf
- https://cdn.shopify.com/s/files/1/0463/6891/5617/files/biocalculus_calculus_for_life_sciences_free.pdf
- https://cdn.shopify.com/s/files/1/0461/9426/2166/files/bike_race_games_please.pdf
- https://cdn.shopify.com/s/files/1/0430/7006/2754/files/78789404223.pdf
- https://cdn.shopify.com/s/files/1/0428/9334/4924/files/nsfas_bursary_form.pdf
- https://cdn.shopify.com/s/files/1/0436/1509/2893/files/guia_ceneval_psicologia_contestada_gratis.pdf
- https://cdn.shopify.com/s/files/1/0431/7108/6485/files/bobikepokonixupa.pdf
- https://cdn.shopify.com/s/files/1/0430/4722/3458/files/synonyms_and_antonyms_list.pdf
- https://cdn.shopify.com/s/files/1/0428/7699/3702/files/91007905923.pdf
- https://cdn.shopify.com/s/files/1/0431/3962/9218/files/43748399681.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006a25.bin` `73968bafff31011cf87eb11618806d0aadb1ad289dd72e69d80c07faf8cefc37`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A25	5104 bytes
`font_01_sfnt_off00007b55.bin` `51f2a1f3dc3336a910fa8eabcf5a895d4c737e50ec90d18bf241a031adfa5a5e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7B55	14192 bytes
`font_02_sfnt_off0000a8da.bin` `b098da79dd067f31ba2c2b8c1c5e919600cd02ab140df2a372f8f699e4c507e4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA8DA	16076 bytes

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