Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bda214eda73d2c3…

MALICIOUS

PDF

47.4 KB Created: 2020-08-05 00:09:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 478f49e3999094db12500fe339d32a33 SHA-1: e9b0cd99c6c682c2e3fcfc47eb069e1c33291134 SHA-256: 8bda214eda73d2c3b1a737b2b91e3c138d7b1a1f266935942a96e2c6025861f9
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely intended to lead the user to a malicious payload. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirect. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to increase visibility of the malicious content.

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.com/pify?keyword=camara+de+comercio+internacional+pdf
    • http://vafeda.pumpernickelpictures.com/uploads/1/3/1/0/131069899/e8d0b21.pdf
    • http://files.rozelcruz.com/uploads/1/3/1/4/131438111/c87f8139ad8b.pdf
    • http://vebinip.prospectartworks.com/uploads/1/3/1/4/131437044/9512ea3610e266.pdf
    • http://files.northopchurch.org/uploads/1/3/1/3/131382841/diwasa_pezimonono.pdf
    • http://files.bedfordboyshome.com/uploads/1/3/0/9/130969689/gavikebejexerof_vigamemumu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8748/7385/files/jonbenet_ramsey_autopsy.pdf
    • https://cdn.shopify.com/s/files/1/0431/6423/7992/files/38480357182.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/tivubobejoxizudatefediw.pdf
    • https://cdn.shopify.com/s/files/1/0434/3093/6732/files/36601125733.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40323832667.pdf
    • https://cdn.shopify.com/s/files/1/0437/8161/9873/files/95940927826.pdf
    • https://cdn.shopify.com/s/files/1/0433/7824/5781/files/zikumuduzenirejezalivegax.pdf
    • https://cdn.shopify.com/s/files/1/0428/9540/9311/files/getus.pdf
    • https://cdn.shopify.com/s/files/1/0436/9124/5733/files/traceroute_program_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0428/8095/8617/files/sodosegenusu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/48177964882.pdf
    • https://cdn.shopify.com/s/files/1/0431/4464/2716/files/canon_mg5320_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/fipobovobavuxebemuvum.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92399027362.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007885.bin
784bb3107a577945523a4cd9d750c176f84783736089a7f147583776ec27cff1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7885 5028 bytes
font_01_sfnt_off00008986.bin
630042ab68cac44946ee2b12332068ae0b14d5520824b1de0d066646d0923ff2
pdf-font-stream PDF embedded font (sfnt) at offset 0x8986 11328 bytes