Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9fa5abe1404a4e6…

MALICIOUS

PDF

40.8 KB Created: 2020-08-09 15:34:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 002041a66d78b3a546cc6af2d9882417 SHA-1: 9d3e5f78535e9036961f02cff398fd9eee6ab4fa SHA-256: c9fa5abe1404a4e6ab71b41642f14c3c3c369395477611313b12022dd58e01f9
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on Shopify. The document body, though heavily obfuscated, contains the text 'Konversi file pdf ke word' and the malicious URL, suggesting a lure for users seeking file conversion. The presence of multiple unknown URLs further supports a malicious intent, likely to lead users to further malicious content or downloads.

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.com/pify?keyword=konversi+file+pdf+ke+word
    • http://bajanug.colombiandelightscafe.com/uploads/1/3/0/7/130776208/1980217.pdf
    • http://zetob.wcrwestmichigan.com/uploads/1/3/2/8/132814930/24f54ef55554770.pdf
    • http://girotepi.airbreather.net/uploads/1/3/2/8/132814930/12ad0.pdf
    • http://files.nationvszombies.org/uploads/1/3/2/6/132681507/sejazozu.pdf
    • http://files.g3valeting.co.uk/uploads/1/3/1/4/131437680/vonutixepepi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/acnezil_gel_secativo_bula.pdf
    • https://cdn.shopify.com/s/files/1/0432/0926/1220/files/mopaloki.pdf
    • https://cdn.shopify.com/s/files/1/0431/8691/3439/files/specific_gravity_of_aggregate_test.pdf
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/19565490114.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90685913575.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/tutorial_manipulasi_photoshop_pemula.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1589944702.pdf
    • https://cdn.shopify.com/s/files/1/0429/1634/8057/files/xanagezekijiwakuwobif.pdf
    • https://cdn.shopify.com/s/files/1/0438/2756/0598/files/difference_between_ammeter_and_voltmeter.pdf
    • https://cdn.shopify.com/s/files/1/0429/0553/4620/files/log4j_properties_examples.pdf
    • https://cdn.shopify.com/s/files/1/0432/8436/5468/files/19166082580.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_off00005cd3.bin
d681d82c426f30add52c57e7ee74550dcacee164925fad60b3eec681d4e616b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD3 5008 bytes
font_01_sfnt_off00006e06.bin
2263915277fe645c10aecd0b341c3a168335db3fea299b8992376d2c3bed5786
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E06 12932 bytes