Malicious PDF — malware analysis report

Static analysis result for SHA-256 95e3bdd3da0391db…

MALICIOUS

PDF

43.6 KB Created: 2020-08-23 01:01:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8658d6c36686ae4bf1568efb1ffb8112 SHA-1: 6d4d00648b29268867b4b77630d86aeb3b5372c4 SHA-256: 95e3bdd3da0391dbe6be5876a4937f7667a24223552322becc342f96ade1f944
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, including one that points to a known malicious redirector. The document body text, though heavily obfuscated, contains a URL that matches the malicious redirector. The presence of a 'download button' heuristic further supports the lure-based attack pattern. The primary malicious IOC is the redirector URL.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=bazaar+full+movie++in+720p+hd
    • http://lidojix.piolkdesign.com/uploads/1/3/0/7/130776485/neretewukuba.pdf
    • http://files.uniquegraphicdesignz.com/uploads/1/3/0/9/130969352/katojedaruvufajer.pdf
    • http://gojabule.pupsontherunway.com/uploads/1/3/2/6/132682924/fuzazi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0034/0381/files/47293218438.pdf
    • https://cdn.shopify.com/s/files/1/0433/3371/4070/files/duporifuruxetusut.pdf
    • https://cdn.shopify.com/s/files/1/0437/8768/1952/files/gilolamasigaginetosigolo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8844/5591/files/wiluzubaxibawawukokixugi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8748/6358/files/multithreaded_socket_programming_in_c.pdf
    • https://cdn.shopify.com/s/files/1/0437/7713/0647/files/jquery_contains_case_insensitive.pdf
    • https://cdn.shopify.com/s/files/1/0450/6599/4392/files/methods_of_preparation_of_alkanes.pdf
    • https://cdn.shopify.com/s/files/1/0437/0163/3177/files/46346275966.pdf
    • https://cdn.shopify.com/s/files/1/0432/5241/6672/files/91593137204.pdf
    • https://cdn.shopify.com/s/files/1/0429/8889/6415/files/1712713906.pdf
    • https://cdn.shopify.com/s/files/1/0427/7298/8071/files/fewafiwoberaji.pdf
    • https://cdn.shopify.com/s/files/1/0431/2865/1938/files/investment_agreement_contract.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_off000061fb.bin
8cf5ad2a33fb8efcb4f132111480e47c8f33b4af04282de8a05329c443418879
pdf-font-stream PDF embedded font (sfnt) at offset 0x61FB 5616 bytes
font_01_sfnt_off000074f5.bin
4b509282131fd9e4a1469306b28cb49a923f3200c231789adb598c433e112531
pdf-font-stream PDF embedded font (sfnt) at offset 0x74F5 1980 bytes
font_02_sfnt_off00007dcd.bin
7e8eff8a81074be7d9bbfeaa8e90f121e074d1a8e05b8bbac5ef1af66d37f087
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DCD 10184 bytes