Malicious PDF — malware analysis report

Static analysis result for SHA-256 a30f5c860a729305…

MALICIOUS

PDF

49.2 KB Created: 2020-08-03 21:58:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0a9dbc1772e217c55fd778274ce2aa1 SHA-1: 9881951e49c2e9cef0a0e3f322f4626fec899686 SHA-256: a30f5c860a7293057d1252ed9df8f7b879203f2bb2dfc56401e56c661acf684a
128 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, disguised with a "Sap payroll process pdf" keyword. The document body, though heavily obfuscated, contains this URL and numerous other links, many hosted on cdn.shopify.com, suggesting a link farm or redirection strategy. The presence of a malicious redirector link indicates a likely attempt to deliver a secondary payload or phish for credentials.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=sap+payroll+process+pdf
    • http://files.thejustinreedshow.com/uploads/1/3/1/4/131437930/fizev-faseb-fuvata.pdf
    • http://files.centertowndfw.com/uploads/1/3/0/7/130738568/82af2a1180f2.pdf
    • http://files.necbasketball.org/uploads/1/3/1/4/131438013/tawov.pdf
    • https://cdn.shopify.com/s/files/1/0433/6150/1336/files/wugitulimagupetajufure.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4023/files/tamana.pdf
    • https://cdn.shopify.com/s/files/1/0436/7250/2425/files/2003_volkswagen_beetle_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/0579/6774/files/56093713292.pdf
    • https://cdn.shopify.com/s/files/1/0432/3734/3387/files/wulegosasuxoz.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/xeroferapijutatav.pdf
    • https://cdn.shopify.com/s/files/1/0434/2795/4840/files/gta_san_andreas_psp.pdf
    • https://cdn.shopify.com/s/files/1/0430/8254/7361/files/sepaxeme.pdf
    • https://cdn.shopify.com/s/files/1/0434/2729/9478/files/14293740653.pdf
    • https://cdn.shopify.com/s/files/1/0429/6186/2810/files/gavetiza.pdf
    • https://cdn.shopify.com/s/files/1/0436/3023/1712/files/sadategapivizax.pdf
    • https://cdn.shopify.com/s/files/1/0434/7569/7830/files/sigixepeveraxogapo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9076/3175/files/fasituw.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/16344040276.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_off00007696.bin
b23feee310cd4caaf02b352f722e7a01fdde2cc453ca5a9452448aee67cba390
pdf-font-stream PDF embedded font (sfnt) at offset 0x7696 4908 bytes
font_01_sfnt_off00008751.bin
0c6c26d16f2e5464447fd30668c4b0cdb62ab2a5facaea6eb22424be46424c18
pdf-font-stream PDF embedded font (sfnt) at offset 0x8751 10072 bytes
font_02_sfnt_off0000a9c8.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xA9C8 4324 bytes