Malicious PDF — malware analysis report

Static analysis result for SHA-256 d23d10fe1de55fef…

MALICIOUS

PDF

53.4 KB Created: 2020-07-28 21:37:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57e4e0045476c6525828636f00422fd1 SHA-1: 28d0c8738407f7300a1cd84738d3d4a8487a0214 SHA-256: d23d10fe1de55fef61bce72a265b4c581a80cbe8691c61b5d117b6165fed8871
128 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to a 'project kick off template ppt'. The presence of a visual download button further supports a social engineering pretext. The primary malicious IOC is the redirector URL, which likely leads to further stages of the attack.

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=project+kick+off+template+ppt
    • http://files.lemonteilrevolution.com/uploads/1/3/0/7/130739678/dabimikanupitiv_fegowojidomet_mixufudap_pasuf.pdf
    • http://files.aroundthepros.com/uploads/1/3/1/4/131406841/jotozanofeguxujep.pdf
    • http://files.greensouthirrigation.com/uploads/1/3/2/3/132303009/gudukano.pdf
    • http://files.piecesearlylearning.com/uploads/1/3/1/4/131454766/xezuposuwafilaw_larodu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/38274350279.pdf
    • https://cdn.shopify.com/s/files/1/0433/9138/5758/files/nofizoditosiravobijefujed.pdf
    • https://cdn.shopify.com/s/files/1/0430/6200/1821/files/85044640251.pdf
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/84619091127.pdf
    • https://cdn.shopify.com/s/files/1/0427/6381/3020/files/12936331085.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/luvibuxunefipefijuli.pdf
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/27657067032.pdf
    • https://cdn.shopify.com/s/files/1/0428/3482/1287/files/96008754415.pdf
    • https://cdn.shopify.com/s/files/1/0431/5486/6333/files/zuneratepobamuboxi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/puxolujim.pdf
    • https://cdn.shopify.com/s/files/1/0436/4507/5609/files/94681647244.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/
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/84619091127.p

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008cad.bin
593e8f181df272a57868273b10fd6dab03db88134496da823438275cc0631c7e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CAD 4808 bytes
font_01_sfnt_off00009d02.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D02 1800 bytes
font_02_sfnt_off0000a58f.bin
dc4006e63600ae8fcc58717ac79e4e0cdbd6e19e482940f3e9f5adecc56ca250
pdf-font-stream PDF embedded font (sfnt) at offset 0xA58F 10204 bytes