Malicious PDF — malware analysis report

Static analysis result for SHA-256 f77e5381a53024fd…

MALICIOUS

PDF

46.7 KB Created: 2020-07-19 14:20:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: becc5843a46060015b691858d0739f18 SHA-1: 747f91d45766b56dc1900218ba57e7d113b89686 SHA-256: f77e5381a53024fd763466d8dcd95a066e8b1b28e42482e240381ff15671f427
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file contains numerous embedded links, a common tactic for redirecting users to malicious sites. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' specifically flags a link to 'ttraff.ru', indicating a malicious redirector. The 'PDF_SEO_LINK_FARM' heuristic suggests the PDF is part of a larger scheme to manipulate search engine results, likely to drive traffic to malicious content. The ML classifier also strongly indicates maliciousness.

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.ru/pify?keyword=converter+pdf+to+excel+word
    • http://files.lisasprettypups.com/uploads/1/3/0/7/130775174/nekidolowozukux.pdf
    • http://files.brandtechnology.com/uploads/1/3/1/4/131408203/4740797.pdf
    • http://files.lmstevensons.com/uploads/1/3/1/8/131856170/6298009.pdf
    • https://cdn.shopify.com/s/files/1/0430/5852/8405/files/wewazupufozevazadijoxu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4202/9224/files/wofasogavanesene.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/88406012193.pdf
    • https://cdn.shopify.com/s/files/1/0429/4334/8892/files/bodikezirapifikifiwimim.pdf
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/lajop.pdf
    • https://satugovanuw.files.wordpress.com/2020/06/99808319272.pdf
    • https://xezomer.files.wordpress.com/2020/07/xizokenebawotazebusafaraf.pdf
    • https://varesewivoja.files.wordpress.com/2020/06/mowovegukepesiwo.pdf
    • https://fodasudo.files.wordpress.com/2020/06/fevufuvesafurume.pdf
    • https://vosorafumen.files.wordpress.com/2020/06/jaxawetobaselenex.pdf
    • https://cdn.shopify.com/s/files/1/0431/6630/2376/files/51779712702.pdf
    • https://cdn.shopify.com/s/files/1/0430/0088/9507/files/wopexobip.pdf
    • https://cdn.shopify.com/s/files/1/0430/2084/5210/files/wigij.pdf
    • https://cdn.shopify.com/s/files/1/0433/8899/3699/files/47950540925.pdf
    • https://cdn.shopify.com/s/files/1/0430/8477/5577/files/wajawejojivomojaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/nozilik.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/bikiborelavunopoketogi.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.

FilenameKindSourceSize
font_00_sfnt_off000064cf.bin
76ff8dfcdb95159acb5b014bcfe13fb683dab193398f3497d10c7bb3296a27bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x64CF 4744 bytes
font_01_sfnt_off0000751a.bin
0aa1dd4a1b4fa58456e1615d8127f87cf06e380fec62c272d77e7ea442316acf
pdf-font-stream PDF embedded font (sfnt) at offset 0x751A 9924 bytes
font_02_sfnt_off0000974d.bin
0c82561ead172ac0e51412abe629b5944d5f81f469066018c017fef234fe4ba7
pdf-font-stream PDF embedded font (sfnt) at offset 0x974D 16388 bytes