Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ecdd05eefa9fd94…

MALICIOUS

PDF

42.4 KB Created: 2020-08-07 03:38:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cee8b59bf85044d1c691ec1d7f04cd76 SHA-1: 840303a4717aedbbb89a8da614e0b045f6c9d922 SHA-256: 1ecdd05eefa9fd9486fb0068c9e25607bf0264faeb69d0d26c7ca8108e795d17
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to a 'catering business plan' and the malicious URL itself, suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination and potentially distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=catering+business+plan+from+home+pdf
    • http://files.nelsonrealm.com/uploads/1/3/0/8/130814680/2a33512a6278d34.pdf
    • http://burogew.adrianlobo.net/uploads/1/3/2/6/132681579/rujonidofi.pdf
    • http://files.papiotrigroup.com/uploads/1/3/1/4/131437423/vigipuditevise-tawoki-lorovinix.pdf
    • http://files.sexeducationbytheatre.com/uploads/1/3/0/7/130738956/palunifunexite-luxabazuwawudeb.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71895612735.pdf
    • https://cdn.shopify.com/s/files/1/0434/5190/8249/files/load_scene_unity.pdf
    • https://cdn.shopify.com/s/files/1/0434/0659/0106/files/taxuve.pdf
    • https://cdn.shopify.com/s/files/1/0427/5775/0951/files/90646789639.pdf
    • https://cdn.shopify.com/s/files/1/0429/4665/8463/files/25829658500.pdf
    • https://cdn.shopify.com/s/files/1/0437/2535/7206/files/ampere_s_circuital_law_proof.pdf
    • https://cdn.shopify.com/s/files/1/0429/5468/6617/files/74594664791.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6429/files/begebulivepijupadi.pdf
    • https://cdn.shopify.com/s/files/1/0435/7950/6847/files/10481063946.pdf
    • https://cdn.shopify.com/s/files/1/0437/9072/9377/files/biography_of_gautam_buddha.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tozonolemudafolafoxi.pdf
    • https://cdn.shopify.com/s/files/1/0435/5050/7167/files/81845605611.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupesuditijativerawepafu.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_off00006730.bin
8cf5ecdaf4170b1fcd156a611caa9222f9687e3ad7f17c03173032ce25e8132e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6730 5500 bytes
font_01_sfnt_off000079ad.bin
06407e1f71490208b3394f84b68e0479618f3f9cc5d5aedb8d166a00b44009fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79AD 10172 bytes

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