Malicious PDF — malware analysis report

Static analysis result for SHA-256 3087105a36b4f464…

MALICIOUS

PDF

55.4 KB Created: 2020-08-16 13:46:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 534c344d80d06394cd5e552b3297b96a SHA-1: b243a63edd823c39fd6da03e30d6185023139227 SHA-256: 3087105a36b4f464c048bdfbb0b30d375f99acede2a9cf94bfbf358f9a41acf5
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which are designed to mimic SEO-friendly book titles. One of the primary links directs to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains references to the same malicious URL and other URLs hosted on various domains, suggesting a link farm or redirection scheme to deliver malicious content. No scripts were extracted, and the primary malicious activity observed is the redirection to external malicious sites.

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/wb?keyword=lal%20kitab%20book%20in%20gujarati%20pdf
    • http://fotazupo.caddenggroup.com/uploads/1/3/0/7/130775934/dulisurinadeb-dezipo-pejoxurelixole.pdf
    • http://surovixuw.workshopinabox.shop/uploads/1/3/2/8/132814930/pituni.pdf
    • http://gasatoxa.itsthabom.com/uploads/1/3/0/7/130740019/7cf4d5448d4c220.pdf
    • http://rijifiva.omareconomics.com/uploads/1/3/0/7/130776458/vemozezuji.pdf
    • http://tefedesug.nabclean.com.au/uploads/1/3/1/4/131406390/xekif.pdf
    • https://cdn.shopify.com/s/files/1/0430/9975/0560/files/kozefazemi.pdf
    • https://cdn.shopify.com/s/files/1/0452/7413/6738/files/aql_standard_table.pdf
    • https://cdn.shopify.com/s/files/1/0430/9093/5969/files/63570585982.pdf
    • https://cdn.shopify.com/s/files/1/0433/3505/7559/files/probability_questions_with_solutions_grade_12.pdf
    • https://cdn.shopify.com/s/files/1/0428/7270/1095/files/digidumogekuseg.pdf
    • https://cdn.shopify.com/s/files/1/0440/4009/3846/files/gipizopusotijiru.pdf
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/diccionario_bblico_ilustrado_holman_revisado_y_aumentado_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0431/8016/3229/files/palizobaruwa.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/boq_full_form_in_tender.pdf
    • https://cdn.shopify.com/s/files/1/0436/9884/7896/files/46953382684.pdf
    • https://cdn.shopify.com/s/files/1/0448/3471/7858/files/alma_ata_conference.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9341/files/67765795942.pdf
    • https://cdn.shopify.com/s/files/1/0438/4981/0080/files/50958034832.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/datumaf.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006167.bin
9447ab532f8efca295434e4f9cc5370b69fb763d175091d569abf146b40fa66f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6167 5252 bytes
font_01_sfnt_off00007354.bin
4e47b27e1efd2cbe59e9a23b3daa6929984233a8307a3c2c083db370f01780e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7354 12628 bytes
font_02_sfnt_off00009db4.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DB4 16164 bytes
font_03_sfnt_off0000b305.bin
289a00193b19e0696635b128d8f59f7b427f9b48fcd913a36141d00442a36247		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB305 8620 bytes

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