Malicious PDF — malware analysis report

Static analysis result for SHA-256 950bb49f72dbe1df…

MALICIOUS

PDF

46.8 KB Created: 2020-08-17 04:36:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a84f7d92438cd26d426b8725d7deac4d SHA-1: 5458a9a787e7bf108f3ffd1b38d98e9af77aa135 SHA-256: 950bb49f72dbe1df56fb92dd33d20659e0c86849f83cea837b7ca984f7305edd
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a high number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=nj+state+accident+report+form', is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Nj state accident report form' and the malicious URL, suggesting a lure to trick users into downloading further malicious content.

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=nj+state+accident+report+form
    • http://files.conviviumwest.org/uploads/1/3/1/3/131380339/490563.pdf
    • http://files.eyelashogden.com/uploads/1/3/2/3/132303138/5374281.pdf
    • http://torumuva.redcarpetbooths.com/uploads/1/3/1/3/131382595/eeb06579d10.pdf
    • https://cdn.shopify.com/s/files/1/0427/3229/0215/files/zoviruzikonobuna.pdf
    • https://cdn.shopify.com/s/files/1/0436/3059/2160/files/keruvuposo.pdf
    • https://cdn.shopify.com/s/files/1/0429/5242/5631/files/nifavuz.pdf
    • https://cdn.shopify.com/s/files/1/0439/4123/2795/files/bimibomuwejesuki.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/engineering_chemistry_notes_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/6382/6849/files/nerip.pdf
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/welokomasop.pdf
    • https://cdn.shopify.com/s/files/1/0432/6303/3502/files/xiviz.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/dictionary_of_computer_science_engineering_and_technology_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/8470/7992/files/laxegenodobej.pdf
    • https://cdn.shopify.com/s/files/1/0432/8367/7339/files/77500171833.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_off00006b1b.bin
6abda29895e261f63e9bf7d91078b0d1a4ed1defa2187b36b6b1482e852065b9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1B 5100 bytes
font_01_sfnt_off00007c53.bin
004b7ce6a41fb39c2208ffd62f20259beb670e3f04916213df6cb61b32283e0a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C53 10392 bytes
font_02_sfnt_off0000a005.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xA005 4324 bytes