Malicious PDF — malware analysis report

Static analysis result for SHA-256 45caa62fc0b29791…

MALICIOUS

PDF

33.9 KB Created: 2020-08-09 17:06:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99e725ba4e6c6d0e2d41ccbfe8f21eb0 SHA-1: 7d1c2d67e087922ea3de9caadc8ffa005bcad5b3 SHA-256: 45caa62fc0b29791f8119635b6c51fea1766fe44847e55b684afbfee65859591
160 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link to 'ttraff.com' and a large number of external PDF links, many hosted on Shopify, suggesting a link farm for SEO manipulation. The document body text, though heavily obfuscated, contains the title 'Adrenalina do amor pdf' and the malicious URL, reinforcing the lure. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document's social engineering tactic is to trick users into installing software. 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=adrenalina+do+amor+pdf
    • http://files.timstrings.com/uploads/1/3/0/9/130968950/33905.pdf
    • http://files.socialstockwoman.com/uploads/1/3/2/8/132814097/pigarotow-movubiromitux-meferibuz-vobepupa.pdf
    • http://lazulaxi.amitsharmaphotography.com/uploads/1/3/2/8/132814930/874b21d5d38a.pdf
    • https://cdn.shopify.com/s/files/1/0432/8099/0366/files/62941596838.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/65542336551.pdf
    • https://cdn.shopify.com/s/files/1/0435/3681/0135/files/begufimikufawefap.pdf
    • https://cdn.shopify.com/s/files/1/0432/8099/0366/files/mekagerud.pdf
    • https://cdn.shopify.com/s/files/1/0429/3397/7255/files/51185628371.pdf
    • https://cdn.shopify.com/s/files/1/0429/5242/5631/files/ruvigapupikir.pdf
    • https://cdn.shopify.com/s/files/1/0432/3423/0429/files/duwikogiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/4665/8463/files/savumev.pdf
    • https://cdn.shopify.com/s/files/1/0436/0214/9539/files/gedoxebekawotigepegude.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bofudajix.pdf
    • https://cdn.shopify.com/s/files/1/0431/0843/4077/files/98556294708.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_off000047b1.bin
9d0e76824ae361c16e6afbc068b861398ef1957cc7fc13bbbf61edd2229b9728
pdf-font-stream PDF embedded font (sfnt) at offset 0x47B1 4996 bytes
font_01_sfnt_off00005897.bin
1f79dc09a1d2da7b600fa66a81bc83ac459a74596a7ea641de41ce9687684b3f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5897 10116 bytes