Malicious PDF — malware analysis report

Static analysis result for SHA-256 617e7cc28698b153…

MALICIOUS

PDF

80.6 KB Created: 2020-09-11 02:45:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae9f005d3d48656428b119e995fa85c7 SHA-1: bf0221e347dd581daf273305935ec4f0a4e096f7 SHA-256: 617e7cc28698b15304982a5fa2f41c69cc172e74859acab0744c9ee2c48ee6ca
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous links to external resources, including a primary link to a known malicious redirector. The document's content and structure suggest it is part of a link farm designed to lure victims to malicious sites. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs and a redirector link supports a phishing or redirection attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.me/wix?keyword=informe+de+levantamiento+altimetrico
    • http://rejonalu.opmetoc.com/uploads/1/3/0/7/130739693/jonofunadakavorigag.pdf
    • http://files.rhosarts.com/uploads/1/3/2/6/132695354/roxumefoxidibuseza.pdf
    • http://ratalur.winfieldtradingcompany.com/uploads/1/3/1/4/131437423/958943.pdf
    • http://dolegadu.rootsphillyyoga.com/uploads/1/3/1/4/131438572/5646a9e937f7dbe.pdf
    • http://paluxinu.paulettesart.com/uploads/1/3/0/7/130776485/kutifeboze.pdf
    • http://nugiriw.peugeot-bebe-register.com/uploads/1/3/1/6/131606165/rojivulefu-tadamarujafew-fuputaduvabet.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/1634/8071/files/fekafetamajini.pdf
    • https://cdn.shopify.com/s/files/1/0438/6727/5424/files/99181323895.pdf
    • https://cdn.shopify.com/s/files/1/0428/7083/3319/files/83663252353.pdf
    • https://cdn.shopify.com/s/files/1/0438/4597/6221/files/47460096357.pdf
    • https://cdn.shopify.com/s/files/1/0439/4326/4411/files/cool_pumpkin_carving_templates.pdf
    • https://cdn.shopify.com/s/files/1/0432/3796/5979/files/american_frontiersman_magazine.pdf
    • https://cdn.shopify.com/s/files/1/0456/8471/9775/files/60584905239.pdf
    • https://cdn.shopify.com/s/files/1/0429/5409/6806/files/vomimitikijo.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7ae.bin
aa494f7a8ada7e3d543a44a920cd156901ff77b63dda8af2e9c0221a7d3932c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7AE 4988 bytes
font_01_sfnt_off0000f893.bin
2568d83f65bc80372cc2fe931c24856e1bb4f0d76a0e8f267624977e36720f2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF893 11804 bytes
font_02_sfnt_off00011eb3.bin
23e5e0a6ad5360bf10628433507e5aab34c42d7d900ccb2a5214949f2168b422		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11EB3 16112 bytes

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