Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b2fe44f61e9b3dd…

MALICIOUS

PDF

52.1 KB Created: 2020-08-21 18:32:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58211ac8164f5940af0503d18c01a840 SHA-1: 6f8381040177abcb6347bbffcc0fb0b58e802186 SHA-256: 8b2fe44f61e9b3dd2c651a65f81362f6137d04680402121efd4b56cddbe293d0
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of external links, indicative of a link farm or SEO manipulation tactic. One of these links, 'https://ttraff.cc/pify?keyword=black+tongue+nadir', points to known malicious redirector infrastructure. The document body itself is heavily obfuscated and contains embedded URLs, further supporting the malicious nature of the file.

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=black+tongue+nadir
    • http://datezasi.theshak.com.au/uploads/1/3/1/4/131452883/f5d31bef.pdf
    • http://files.spiritofthe8thfire.com/uploads/1/3/1/3/131379037/gafifedaxegipobekowa.pdf
    • http://bukonag.concertsbythecreek.com/uploads/1/3/2/3/132303168/bulejujez.pdf
    • http://zexafer.hysterectomywithouthospital.com/uploads/1/3/1/6/131606289/beveverafuke_sawosafixerot_tulezegem_zuxekasabut.pdf
    • https://cdn.shopify.com/s/files/1/0448/1040/4000/files/react_js_tutorial_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/1905/7822/files/84186725604.pdf
    • https://cdn.shopify.com/s/files/1/0427/7963/9967/files/20469454117.pdf
    • https://cdn.shopify.com/s/files/1/0440/2446/3525/files/69710427439.pdf
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/34330301872.pdf
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/kojigafariwuxifad.pdf
    • https://cdn.shopify.com/s/files/1/0431/0053/6986/files/ropenumedifam.pdf
    • https://cdn.shopify.com/s/files/1/0450/7946/2040/files/asperger_adultos.pdf
    • https://cdn.shopify.com/s/files/1/0436/1201/2701/files/81019635021.pdf
    • https://cdn.shopify.com/s/files/1/0435/8494/6333/files/badli_badli_lage_ringtone_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0163/4213/files/freebitco._in_hack_script.pdf
    • https://cdn.shopify.com/s/files/1/0431/0761/4882/files/64046132798.pdf
    • https://cdn.shopify.com/s/files/1/0427/9592/5671/files/ruvunugonom.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_off0000814c.bin
dcd0963c7f14db31fd1d8d1c8d1a36e72430b84cffb4ad8c1f1ad02f998d65a3
pdf-font-stream PDF embedded font (sfnt) at offset 0x814C 4924 bytes
font_01_sfnt_off00009213.bin
4e944684bf27d6764bdee15a7958c151d957566dcd1d9fed6b9c0c16bfad50fa
pdf-font-stream PDF embedded font (sfnt) at offset 0x9213 10192 bytes
font_02_sfnt_off0000b4fd.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xB4FD 4324 bytes