Malicious PDF — malware analysis report

Static analysis result for SHA-256 d02b4d1430224551…

MALICIOUS

PDF

39.2 KB Created: 2020-09-01 11:37:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf1a6b8c8ece56af88ad17a28eb388d2 SHA-1: 52177dfd11ead5a334a2188c7ccd6621f6315458 SHA-256: d02b4d1430224551add1e17c16c9cabd8c3edce00e2bcc8ce63b71c9e0a87d6d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, disguised with a keyword related to hotel sheets. This suggests a phishing or scam attempt. The PDF also hosts a large number of external links, characteristic of SEO poisoning or link farm tactics. No scripts were extracted, but the primary malicious indicator is the redirector URL.

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.link/wix?keyword=luxury+hotel+660+collection+sheets+review
    • https://static.usrfiles.com/ugd/b8c837_8f15cece40b245d68ae428b28317248d.pdf
    • https://static.usrfiles.com/ugd/6cf392_d8df87ebe050449196f56dbde809fba7.pdf
    • https://static.usrfiles.com/ugd/b8c837_c48b819a10ad4545aa8b515cefbe50bf.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2661/files/81423302666.pdf
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/polebujuzutiwavewu.pdf
    • https://cdn.shopify.com/s/files/1/0435/8042/4351/files/absenteeism_research_study.pdf
    • https://cdn.shopify.com/s/files/1/0436/2554/5890/files/86577249905.pdf
    • https://cdn.shopify.com/s/files/1/0430/0485/4426/files/39893103855.pdf
    • https://cdn.shopify.com/s/files/1/0437/7857/2450/files/german_english_offline_dictionary_apk.pdf
    • https://cdn.shopify.com/s/files/1/0431/7646/0447/files/wuwozo.pdf
    • https://cdn.shopify.com/s/files/1/0435/7193/7441/files/vimikasoxejenuki.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_off000059ca.bin
c97121f5627054defc5bdbe0476711dfed4074312bbc83e2ba0035c200186c84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59CA 5236 bytes
font_01_sfnt_off00006bbf.bin
506fc42fbe634871e422431400a6d5d8bd56cf4b7e936bd70664c3ab4ae12ef7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBF 10788 bytes

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