Malicious PDF — malware analysis report

Static analysis result for SHA-256 f985f19b7e57df09…

MALICIOUS

PDF

122.1 KB Created: 2020-08-03 18:32:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57ac9f0a634eaf49187c32a090c19e7b SHA-1: 62a17c3e0042682a66313b74a88d1597d5aa688e SHA-256: f985f19b7e57df096e407ba60ab15544095fdac5f2d4443ac4476d2a64e514c1
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=el+alienista+caleb+carr+pdf+descargar'. Additionally, it exhibits a PDF link farm heuristic, with numerous links to PDFs hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. These factors indicate a malicious intent to redirect users to harmful 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=el+alienista+caleb+carr+pdf+descargar
    • http://files.gemma-browne.com/uploads/1/3/1/4/131452904/vaziwaduvikalovozom.pdf
    • http://files.kofc3570.org/uploads/1/3/2/6/132682785/vesenumusinu.pdf
    • http://files.zestnaturalmedicine.com/uploads/1/3/2/7/132740352/sanagevim.pdf
    • http://files.confed-europia.eu/uploads/1/3/2/6/132681694/683038.pdf
    • https://cdn.shopify.com/s/files/1/0433/5956/8027/files/72409693212.pdf
    • https://cdn.shopify.com/s/files/1/0436/9081/9739/files/lojudo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8015/4269/files/92349526943.pdf
    • https://cdn.shopify.com/s/files/1/0436/5107/2158/files/81718029202.pdf
    • https://cdn.shopify.com/s/files/1/0430/8185/9225/files/direkirokedisano.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/zumdahl_chemistry_8th_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7352/files/vuses.pdf
    • https://cdn.shopify.com/s/files/1/0430/4912/3993/files/4119739528.pdf
    • https://cdn.shopify.com/s/files/1/0437/4387/1127/files/taxaxekufoxikogofuvapuziv.pdf
    • https://cdn.shopify.com/s/files/1/0434/0373/9294/files/setikunidalugigonalona.pdf
    • https://cdn.shopify.com/s/files/1/0430/7573/1607/files/waveposa.pdf
    • https://cdn.shopify.com/s/files/1/0430/3601/6803/files/80163498331.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_off0001a07d.bin
d665ce24300e8c9e25abad0c89273c70fbb12c7b30bc703c7c357cea26d84fab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A07D 5420 bytes
font_01_sfnt_off0001b2f9.bin
021c9b7187ee27b58732802714e9e50fb7d176c7c45603ee68b0676f6acbafd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B2F9 11708 bytes

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