Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc3106c0e0a905fc…

MALICIOUS

PDF

49.7 KB Created: 2020-08-12 20:54:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5eb1c23e7e729075c0825ff2935f6dbd SHA-1: cbbeb7ee3ad462d7b7f04f9e1a75ac4e6808a142 SHA-256: bc3106c0e0a905fc2bb9801fedf70d2e6a35da2369fc67b8516ade27bd7bde46
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=arreglos+unidimensionales+en+java+pdf'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external links, many hosted on Shopify. The primary malicious link likely serves as a lure to a phishing page or a malware download site. No scripts were extracted, and the document body was largely unreadable binary data.

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.cc/pify?keyword=arreglos+unidimensionales+en+java+pdf
    • http://files.carolinefreudenthal.com/uploads/1/3/1/6/131637374/pogetiwenufif-fikasorerezulal-rifubiwuvapufi-tuliretejozibux.pdf
    • http://files.soulvisionhealing.com/uploads/1/3/2/3/132303175/3945262.pdf
    • http://sesupow.runnerstoke.com/uploads/1/3/0/9/130969352/1925629.pdf
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/pumudanuwuzijipalod.pdf
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/68733940170.pdf
    • https://cdn.shopify.com/s/files/1/0438/2402/1664/files/caudillismo_en_latinoamerica.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6050/files/mafudirujutipe.pdf
    • https://cdn.shopify.com/s/files/1/0432/5556/2398/files/xevurerajivokilirited.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/hcsb_apologetics_study_bible.pdf
    • https://cdn.shopify.com/s/files/1/0436/2852/7779/files/xavuvogivafamuku.pdf
    • https://cdn.shopify.com/s/files/1/0431/1285/7754/files/virtual_earth_worm_dissection.pdf
    • https://cdn.shopify.com/s/files/1/0433/1801/8216/files/46699885245.pdf
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/43141967737.pdf
    • https://cdn.shopify.com/s/files/1/0432/5516/9186/files/59951773542.pdf
    • https://cdn.shopify.com/s/files/1/0437/2830/6341/files/89936687623.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8360/files/kokiz.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_off0000742b.bin
ba02b91daff0c84711bcb2c32563bdbe79f6155150152d2b62e53fd98b2d64fb
pdf-font-stream PDF embedded font (sfnt) at offset 0x742B 5288 bytes
font_01_sfnt_off00008612.bin
cbbdcb29749251fa210d555e8b31e58f72d5e48e91b3d14a40959c26680dc10e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8612 11264 bytes
font_02_sfnt_off0000aaf3.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xAAF3 4324 bytes